Page last updated: 2024-11-05

nitrous acid

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Description

Nitrous Acid: Nitrous acid (HNO2). A weak acid that exists only in solution. It can form water-soluble nitrites and stable esters. (From Merck Index, 11th ed) [Medical Subject Headings (MeSH), National Library of Medicine, extracted Dec-2023]

Cross-References

ID SourceID
PubMed CID24529
CHEMBL ID1161681
CHEBI ID25567
MeSH IDM0014926

Synonyms (32)

Synonym
hno2
nitrous acid
hydroxidooxidonitrogen
[no(oh)]
hydrogen dioxonitrate(1-)
7782-77-6
dioxonitric acid
nitrosyl hydroxide
CHEBI:25567 ,
einecs 231-963-7
kyselina dusite [czech]
C00088
CHEMBL1161681
hsdb 7801
kyselina dusite
t2i5um75dn ,
unii-t2i5um75dn
nitrous acid [mi]
hono
DTXSID7064813 ,
BLNWTAHYTCHDJH-UHFFFAOYSA-N
nitrous acid, trans
DB09112
bdbm50147619
nitrogen dioxide ion
nitrogen peroxide ion
nitrousacid
Q211891
Q207895
dtxcid4048014
(no(oh))
acid, nitrous

Research Excerpts

Overview

Nitrous acid is a species that drives these indoor chemical processes, with potentially detrimental health effects. Nitrous acid (HONO) is an important source of hydrogen oxides (HOx), which affects air quality, the atmospheric oxidation capacity, and human health. Free nitrous Acid (FNA) is a critical metric for stabilization of ANAMMOX but can not be directly and immediately measured by sensors.

ExcerptReferenceRelevance
"Nitrous acid (HONO) is a species that drives these indoor chemical processes, with potentially detrimental health effects."( A boron dipyrromethene (BODIPY) based probe for selective passive sampling of atmospheric nitrous acid (HONO) indoors.
Bentley, JN; Caputo, CB; Crilley, LR; Nodeh-Farahani, D; VandenBoer, TC, 2021
)
1.56
"Nitrous acid (HONO) is an important component of the global nitrogen cycle and can regulate the atmospheric oxidative capacity. "( Key Role of Equilibrium HONO Concentration over Soil in Quantifying Soil-Atmosphere HONO Fluxes.
Bao, F; Cheng, Y; Kratz, AM; Kuhn, U; Li, G; Pöschl, U; Su, H; Wang, W; Weber, B; Weber, J, 2022
)
2.16
"Nitrous acid (HONO) is a household pollutant exhibiting adverse health effects and a major source of indoor OH radicals under a variety of lighting conditions. "( Gas-Phase Nitrous Acid (HONO) Is Controlled by Surface Interactions of Adsorbed Nitrite (NO
Grassian, VH; Pandit, S, 2022
)
2.57
"Nitrous acid (HONO) is an important source of hydrogen oxides (HOx), which affects air quality, the atmospheric oxidation capacity, and human health. "( Atmospheric HONO formation during and after the Spring Festival holidays in a coastal city of China.
Lan, G; Liang, B; Ni, X; Sun, C; Zhang, Y; Zhao, J; Zhou, S, 2023
)
2.35
"Free nitrous acid (FNA) is a critical metric for stabilization of ANAMMOX but can not be directly and immediately measured by sensors or chemical measurement method, which hinders the effective management and operation for ANAMMOX. "( Free nitrous acid prediction in ANAMMOX process using hybrid deep neural network model.
Chen, Z; Dong, J; He, J; Huang, M; Ke, Y; Li, J; Li, X; Lu, S; Niu, G; Yi, X, 2023
)
1.94
"Nitrous acid (HONO) is a reactive gas that plays an important role in atmospheric chemistry. "( Quantifying the Nitrogen Sources and Secondary Formation of Ambient HONO with a Stable Isotopic Method.
Chai, J; Fang, Y; Li, J; Liu, P; Tan, Y; Tian, C; Wang, T; Zhang, G; Zong, Z, 2023
)
2.35
"Nitrous acid (HONO) is an important precursor of hydroxyl radical (OH) in the atmosphere. "( Influence of Chinese New Year overlapping COVID-19 lockdown on HONO sources in Shijiazhuang.
Bao, X; Fan, X; Feng, H; Feng, Z; Jiang, T; Liu, Y; Ni, S; Xing, S; Zhang, L; Zhang, Y, 2020
)
2
"Nitrous acid (HONO) is a major precursor of tropospheric hydroxyl radical (OH) that accelerates the formation of secondary pollutants. "( HONO Budget and Its Role in Nitrate Formation in the Rural North China Plain.
An, J; Catoire, V; Chen, H; Chen, J; Kleffmann, J; Krysztofiak, G; Liu, P; Mellouki, A; Mu, Y; Ren, Y; Wang, J; Wang, T; Xue, C; Ye, C; Zhang, C; Zhang, F; Zhang, J; Zhao, X, 2020
)
2
"Nitrous acid (HONO) is an important gaseous pollutant contributing to indoor air pollution because it causes adverse health effects and is the main source of hydroxyl radicals (OH). "( Unexpectedly High Indoor HONO Concentrations Associated with Photochemical NO
Deng, H; Gligorovski, S; Jiang, H; Lakey, PSJ; Liu, J; Mekic, M; Shiraiwa, M; Wang, X, 2020
)
2
"Nitrous acid (HONO) is a major source of hydroxyl (OH) radicals, and identifying its source is crucial to atmospheric chemistry. "( Simulation Verification of Barrierless HONO Formation from the Oxidation Reaction System of NO, Cl, and Water in the Atmosphere.
Han, Y; Li, Y; Ma, X; Shi, X; Teng, Z; Wang, J; Wang, Q; Wang, W; Xu, F; Zhang, Q; Zhao, X, 2021
)
2.06
"Nitrous acid (HONO) is a toxic household pollutant and a major source of indoor OH radicals. "( HONO Production from Gypsum Surfaces Following Exposure to NO
Grassian, VH; Mora Garcia, SL; Pandit, S, 2021
)
2.06
"Nitrous acid (HONO) is an important precursor of the hydroxyl radical (OH), the atmosphere´s primary oxidant. "( Hydroxylamine released by nitrifying microorganisms is a precursor for HONO emission from drying soils.
Andreae, MO; Behrendt, T; Derstroff, B; Ermel, M; Hohlmann, S; Könneke, M; Meixner, FX; Oswald, R; Pommerening-Röser, A; Sörgel, M; Stönner, C; Trebs, I; Williams, J; Wu, D, 2018
)
1.92
"Nitrous acid degradation is a major approach to produce LMWHs, such as dalteparin."( Preparation of low molecular weight heparins from bovine and ovine heparins using nitrous acid degradation.
Chi, L; Guan, Y; Jin, L; Li, F; Linhardt, RJ; Xie, S; Yu, M; Zhu, P, 2018
)
1.43
"Nitrous acid (HONO) is an important component of indoor air as a photolabile precursor to hydroxyl radicals and has direct health effects. "( Evidence for Gas-Surface Equilibrium Control of Indoor Nitrous Acid.
Abbatt, JPD; Alavy, M; Collins, DB; Grignon, E; Hems, RF; Siegel, JA; Wang, C; Zhou, S, 2018
)
2.17
"Nitrous acid (HONO) is a precursor of the hydroxyl radical (OH), a key oxidant in the degradation of most air pollutants. "( Soil HONO emissions at high moisture content are driven by microbial nitrate reduction to nitrite: tackling the HONO puzzle.
Andreae, MO; Behrendt, T; Cheng, Y; Cole, JA; Ermel, M; Fröhlich-Nowoisky, J; Hoor, P; Horn, MA; Hu, C; Ju, X; Li, G; Li, J; Liu, M; Müller, S; Oswald, R; Pöschl, U; Sörgel, M; Su, H; Trebs, I; Weber, B; Wu, D; Xie, B, 2019
)
1.96
"Nitrous acid (HONO) is an important atmospheric pollutant that can strongly absorb ultraviolet irradiation in the region of 300-400 nm, as previously reported. "( Photochemical reaction kinetics and mechanistic investigations of nitrous acid with sulfamethazine in tropospheric water.
Lei, Y; Liu, X; Lu, J; Ma, J; Zhu, C; Zhu, M, 2019
)
2.19
"Nitrous acid (HONO) is an important OH radical source that is formed on both ground and aerosol surfaces in the well-mixed boundary layer. "( Uptake of gas phase nitrous acid onto boundary layer soil surfaces.
Berke, AE; Donaldson, MA; Raff, JD, 2014
)
2.17
"Nitrous acid (HONO) is an important hydroxyl (OH) radical source that is formed on both ground and aerosol surfaces in the well-mixed boundary layer. "( Soil surface acidity plays a determining role in the atmospheric-terrestrial exchange of nitrous acid.
Bish, DL; Donaldson, MA; Raff, JD, 2014
)
2.07
"Nitrous acid (HONO) is a photochemical source of hydroxyl radical and nitric oxide in the atmosphere that stems from abiotic and biogenic processes, including the activity of ammonia-oxidizing soil microbes. "( Combined Flux Chamber and Genomics Approach Links Nitrous Acid Emissions to Ammonia Oxidizing Bacteria and Archaea in Urban and Agricultural Soil.
Banina, L; Berke, AE; Donaldson, MA; Hemmerich, C; Peel, HR; Raff, JD; Scharko, NK; Schütte, UM; White, JR, 2015
)
2.11
"Nitrous acid (HONO) is an important source of hydroxyl radical (OH) that determines the fate of many chemically active and climate relevant trace gases. "( SO
He, H; Liang, Y; Liu, C; Ma, Q; Wang, T; Wang, W; Wang, Z, 2017
)
1.9
"Nitrous acid is a mutagenic agent. "( Solution structure of a nitrous acid induced DNA interstrand cross-link.
Edfeldt, NB; Harwood, EA; Hopkins, PB; Reid, BR; Sigurdsson, ST, 2004
)
2.07
"Nitrous acid is a significant photochemical precursor of the hydroxyl radical, the key oxidant in the degradation of most air pollutants in the troposphere. "( Photosensitized reduction of nitrogen dioxide on humic acid as a source of nitrous acid.
Ammann, M; Donders, C; George, C; Kleffmann, J; Stemmler, K, 2006
)
2.01
"Nitrous acid, HNO2, is an important precursor of OH radicals in the troposphere. "( Observations of nitrous acid and its relative humidity dependence in Shanghai.
Chen, D; Chen, LM; Hao, N; Zhou, B, 2006
)
2.12
"Nitrous acid is a primary product of combustion and may also be a secondary product by reaction of nitrogen dioxide with water."( Effect of nitrous acid on lung function in asthmatics: a chamber study.
Beckett, WS; Haber, AD; Leaderer, BP; Mohsenin, V; Rivkin, RM; Russi, MB; Sullivan, JR; Tameroglu, Z, 1995
)
1.41

Effects

Free nitrous acid (FNA) has been demonstrated as an antimicrobial agent on a range of micro-organisms, especially in wastewater-treatment systems. It has been shown to enhance the biodegradability of waste activated sludge (WAS) but its effectiveness on the pre-treatment of mixed sludge is not known.

ExcerptReferenceRelevance
"Free nitrous acid (FNA) has been widely employed for improvement of wastewater management by altering sludge characteristic and function based on its polymer lysing and biocidal capacity. "( Quorum sensing responses of activated sludge to free nitrous acid: Zoogloea deformation, AHL redistribution, and microbiota acclimatization.
Fan, L; Jiang, C; Wang, D; Wang, X; Xu, S; Yang, Y; Zhuang, X, 2023
)
1.67
"Free nitrous acid (FNA) has only been studied as the pretreatment of waste activated sludge (WAS). "( Novel insights into integrated fermentation and nitrogen removal by free nitrous acid (FNA) serving as treatment method.
Jiang, H; Li, B; Peng, Y; Wang, Z; Zhang, F; Zhang, Q, 2020
)
1.3
"Free nitrous acid (FNA) has recently been demonstrated as an antimicrobial agent on a range of micro-organisms, especially in wastewater-treatment systems. "( Determining Multiple Responses of Pseudomonas aeruginosa PAO1 to an Antimicrobial Agent, Free Nitrous Acid.
Agulló-Barceló, M; Bond, PL; Fan, L; Gao, SH; Guo, J; Peng, L; Yuan, Z, 2016
)
1.17
"Free nitrous acid (FNA) has been shown to enhance the biodegradability of waste activated sludge (WAS) but its effectiveness on the pre-treatment of mixed sludge is not known. "( Assessment of free nitrous acid pre-treatment on a mixture of primary sludge and waste activated sludge: Effect of exposure time and concentration.
Icaran, P; Pijuan, M; Yuan, Z; Zahedi, S, 2016
)
1.28
"Free nitrous acid (FNA) has been identified to be a ubiquitous inhibitor of a wide range of microorganisms, including bacteria involved in wastewater treatment. "( Free nitrous acid (FNA) inhibition on denitrifying poly-phosphate accumulating organisms (DPAOs).
Ganda, L; Kjelleberg, S; Lim, M; Ng, WJ; Yuan, Z; Zhou, Y, 2010
)
1.39
"A nitrous acid procedure has been shown to lead to the elimination of N-sulphates in sections of a series of tissues containing sulphated glycoconjugates. "( A nitrous acid procedure as a selective histochemical means of eliminating the N-sulphates of glycoconjugates.
Hirabayashi, Y; Shimizu, S; Yamada, K, 1989
)
1.72

Actions

Nitrous acid (HONO) plays a key role in tropospheric photochemistry, primarily due to its role as a source of hydroxyl (OH) radicals. Nitrous acid may cause adverse effects to mucous membranes and lung function when people are exposed to higher HONO concentrations.

ExcerptReferenceRelevance
"Nitrous acid (HONO) plays an important role in the formation of OH radicals, which are involved in photochemical oxidation. "( Contributions of vehicular emissions and secondary formation to nitrous acid concentrations in ambient urban air in Tokyo in the winter.
Hoshi, J; Nakashima, Y; Sadanaga, Y; Saito, S; Ueno, H, 2017
)
2.14
"Nitrous acid (HONO) plays a key role in tropospheric photochemistry, primarily due to its role as a source of hydroxyl (OH) radicals via its rapid photolysis. "( Sources of atmospheric nitrous acid: state of the science, current research needs, and future prospects.
Ianniello, A; Spataro, F, 2014
)
2.16
"Nitrous acid (HONO) may cause adverse effects to mucous membranes and lung function when people are exposed to higher HONO concentrations than those present in typical indoor residential environments. "( Performance evaluation of an in situ nitrous acid measurement system and continuous measurement of nitrous acid in an indoor environment.
Cho, SY; Park, SS, 2010
)
2.08

Treatment

Free Nitrous Acid (FNA) pre-treatment is a promising technology demonstrated effective in improving waste activated sludge degradability and anaerobic digestion (AD) performance. Treatment with nitrous acid generated phosphatidylinositol (PI) from both proteins, and phospholipase D from rat serum cleavedosphatidic acid from 200-kDa protein.

ExcerptReferenceRelevance
"Free Nitrous Acid (FNA) pre-treatment is a promising technology demonstrated effective in improving waste activated sludge degradability and anaerobic digestion (AD) performance. "( Enhancing anaerobic digestion using free nitrous acid: Identifying the optimal pre-treatment condition in continuous operation.
Calderon, AG; Chen, X; Chen, Z; Duan, H; Hu, S; Keller, J; Li, Y; Shrestha, S; Silva, CE; Wang, Z; Wu, Z; Yu, W; Yuan, Z, 2021
)
1.4
"Free nitrous acid (FNA) pre-treatment has been previously demonstrated to be effective in enhancing methane production and volatile solids (VS) destruction in the anaerobic digestion of waste activated sludge for an equivalent hydraulic retention time (HRT). "( Increasing capacity of an anaerobic sludge digester through FNA pre-treatment of thickened waste activated sludge.
Batstone, DJ; Duan, H; Liu, L; Ye, L; Yuan, Z; Zhang, L, 2019
)
1.03
"Treatment with nitrous acid generated phosphatidylinositol (PI) from both proteins, and phospholipase D from rat serum cleaved phosphatidic acid from the 200-kDa protein."( Identification and characterization of glycosylphosphatidylinositol-linked Schistosoma mansoni adult worm immunogens.
Sauma, SY; Strand, M, 1990
)
0.62

Toxicity

ExcerptReferenceRelevance
" No bleeding effect, factor XIIa-mediated kallikrein activity, or toxic effect on fibroblast cells was induced by the invertebrate HS at the antithrombotic dose."( Unique extracellular matrix heparan sulfate from the bivalve Nodipecten nodosus (Linnaeus, 1758) safely inhibits arterial thrombosis after photochemically induced endothelial lesion.
de Barros, CM; Gomes, AM; Kozlowski, EO; Pavão, MS; Pomin, VH; Zaganeli, JL, 2010
)
0.36
" This study aimed to investigate the dose-response effects of HONO exposure on the histopathological alterations in the respiratory tract of guinea pigs to determine the lowest observed adverse effect level (LOAEL) of HONO."( Lowest observed adverse effect level of pulmonary pathological alterations due to nitrous acid exposure in guinea pigs.
Adachi, S; Azuma, K; Minejima, C; Nishimura, H; Ohyama, M; Takenaka, N, 2020
)
0.78

Compound-Compound Interactions

ExcerptReferenceRelevance
"An electro-coagulation (EC) process combined with added free nitrous acid (FNA) improves sludge dewaterability."( Dewatering municipal wastewater sludge using electro-coagulation combined with added free nitrous acid.
Gao, W; Hui, K; Song, H; Song, L; Wang, Z; Xuan, L; Yin, Z, 2022
)
1.18

Bioavailability

ExcerptReferenceRelevance
"Further investigations of the precipitate should address the bioavailability of PCA leaching out from dentin and its cytotoxicity."( Using diazotization to characterize the effect of heat or sodium hypochlorite on 2.0% chlorhexidine.
Basrani, BR; Fillery, E; Manek, S, 2009
)
0.35

Dosage Studied

Intermittent dosing of free nitrous acid (FNA) is a new strategy developed recently for the control of sulfide production in sewers. The sidestream sludge treatment was frequently demonstrated to maintain the nitrite pathway for the partial nitrification (PN) process.

ExcerptRelevanceReference
" The proposed method was applied successfully to the determination of prenalterol hydrochloride either in the pure form or in its dosage forms."( Polarographic determination of prenalterol hydrochloride through treatment with nitrous acid.
Aly, FA; Belal, F; Walash, MI, 1995
)
0.52
"Direct current and differential pulse polarography DPP were used for the determination of three penicillins, namely, ampicillin, benzylpenicillin and carbenicillin, in pure form and in their dosage forms."( Polarographic determination of some penicillins through nitrosation.
Belal, F; Eid, M; Rizk, MS, 1998
)
0.3
" Results obtained for the proposed method when applied to the determination of both compounds in dosage forms were in good agreement with those obtained using reference methods."( Voltammetric determination of benazepril and ramipril in dosage forms and biological fluids through nitrosation.
Abounassif, MA; Al-Zaagi, IA; Belal, F,
)
0.13
"Two methods are described for the determination of vancomycin (vancomycin hydrochloride, CAS 1404-93-9) in its dosage forms."( Voltametric determination of vancomycin in dosage forms through treatment with nitrous acid.
Belal, F; el-Ashry, SM; el-Kerdawy, MM; el-Wasseef, DR, 2001
)
0.54
"Several recent studies showed that nitrite dosage to wastewater results in long-lasting reduction of the sulfate-reducing and methanogenic activities of anaerobic sewer biofilms."( The strong biocidal effect of free nitrous acid on anaerobic sewer biofilms.
Gutierrez, O; Jiang, G; Yuan, Z, 2011
)
0.65
" The intermittent dosing of FNA as a measure for controlling sulfide and methane productions in sewers is investigated."( Optimization of intermittent, simultaneous dosage of nitrite and hydrochloric acid to control sulfide and methane productions in sewers.
Gutierrez, O; Jiang, G; Keller, J; Sharma, KR; Yuan, Z, 2011
)
0.37
" The loss and the subsequent slow recovery of biological activity in biofilm reactors subjected to FNA and H2O2 dosing confirmed that the chemical combination could achieve higher microbial inactivation than with FNA alone."( Synergistic inactivation of anaerobic wastewater biofilm by free nitrous acid and hydrogen peroxide.
Jiang, G; Yuan, Z, 2013
)
0.63
"Intermittent dosing of free nitrous acid (FNA), with or without the simultaneous dosing of hydrogen peroxide, is a new strategy developed recently for the control of sulfide production in sewers."( Dosing free nitrous acid for sulfide control in sewers: results of field trials in Australia.
Corrie, S; Jiang, G; Keating, A; Nguyen, L; O'halloran, K; Yuan, Z, 2013
)
1.06
" The kinetic model was successfully used to optimize FNA dosage for sulfide control in sewer biofilms."( Inactivation kinetics of anaerobic wastewater biofilms by free nitrous acid.
Jiang, G; Yuan, Z, 2014
)
0.64
"86 times, respectively, suggesting long-term dosing FNA may facilitate the denitrifying of polyphosphate in organisms utilizing nitrite as electron acceptor."( [Long-Term Inhibition of FNA on Aerobic Phosphate Uptake and Variation of Phosphorus Uptake Properties of the Sludge].
Chen, YZ; Li, L; Ma, J; Sun, HW; Sun, LJ; Yu, XJ, 2015
)
0.42
" However, its low thermal stability precludes the preparation of stable dosage forms based on presynthesized SNAC."( Intratablet S-nitrosation: A New Approach for the Oral Administration of S-nitrosothiols as Nitric Oxide Donors.
de Oliveira, MG; de Souza, GF, 2016
)
0.43
"Most commonly used methods for sewer sulfide control involves dosing chemical agents to wastewater, which incurs high operational costs."( Nitrite production from urine for sulfide control in sewers.
Cui, Y; Dong, Q; Huang, X; Liu, Y; Yuan, Z; Zhang, Y; Zheng, M; Zuo, Z, 2017
)
0.46
" Biocides are often dosed to the corrosive media to inhibit and kill the microbes which cause MIC."( Decreasing microbially influenced metal corrosion using free nitrous acid in a simulated water injection system.
Jiang, G; Shi, Z; Yuan, Z; Zhong, H, 2020
)
0.8
"To maintain the integrity of the internal surfaces of the pipelines in oil and gas industry, chemicals, including corrosion inhibitors and biocides, are commonly dosed to prevent corrosion."( Synergistic inhibitory effects of free nitrous acid and imidazoline derivative on metal corrosion in a simulated water injection system.
Jiang, G; Shi, Z; Yuan, Z; Zhong, H, 2020
)
0.83
" This study aimed to investigate the dose-response effects of HONO exposure on the histopathological alterations in the respiratory tract of guinea pigs to determine the lowest observed adverse effect level (LOAEL) of HONO."( Lowest observed adverse effect level of pulmonary pathological alterations due to nitrous acid exposure in guinea pigs.
Adachi, S; Azuma, K; Minejima, C; Nishimura, H; Ohyama, M; Takenaka, N, 2020
)
0.78
" However, conventional methods to control sewer biofilm activities were based on the inhibitory or biocidal effect of chemicals and often required long exposure time or high dosing rates due to the protection of sewer biofilm structure."( Low-rate ferrate dosing damages the microbial biofilm structure through humic substances destruction and facilitates the sewer biofilm control.
Dai, X; Li, W; Ni, BJ; Sun, J; Wang, Y; Xu, J; Yan, X; Zhang, C; Zhang, Z, 2023
)
0.91
"The sidestream sludge treatment by free ammonium (FA)/free nitrous acid (FNA) dosing was frequently demonstrated to maintain the nitrite pathway for the partial nitrification (PN) process."( Insights on biological phosphorus removal with partial nitrification in single sludge system via sidestream free ammonia and free nitrous acid dosing.
Duan, H; Lu, X; Oehmen, A; Ye, L; Yuan, Z; Zhao, J, 2023
)
1.36
[information is derived through text-mining from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Drug Classes (1)

ClassDescription
nitrogen oxoacid
[compound class information is derived from Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Pathways (11)

PathwayProteinsCompounds
nitrobenzene degradation II06
Immune System91482
Innate Immune System41475
ROS and RNS production in phagocytes1237
nitrite reduction (hemoglobin)16
nitrate reduction II (assimilatory)215
Inorganic Nitrogen Assimilation414
Selenium micronutrient network095
Vitamin B12 metabolism050
Folate metabolism156
Effects of nitric oxide07

Protein Targets (12)

Inhibition Measurements

ProteinTaxonomyMeasurementAverageMin (ref.)Avg (ref.)Max (ref.)Bioassay(s)
Carbonic anhydrase Stylophora pistillataKi770.00000.00000.686710.0000AID552130
Carbonic anhydraseStylophora pistillataKi3,150.00000.00000.50715.7100AID552131
Carbonic anhydrase 1Homo sapiens (human)Ki8,400.00000.00001.372610.0000AID1262263; AID1278739; AID1306523; AID238317; AID238513; AID238687; AID552127
Carbonic anhydrase 2Homo sapiens (human)Ki63,000.00000.00000.72369.9200AID1262264; AID1278740; AID1306524; AID238327; AID238542; AID238715; AID552128
Carbonic anhydrase 4Homo sapiens (human)Ki30,800.00000.00021.97209.9200AID238544
Carbonic anhydrase 6Homo sapiens (human)Ki820.00000.00011.47109.9200AID552129
Carbonic anhydrase 5A, mitochondrialHomo sapiens (human)Ki16,000.00000.00001.27259.9000AID238515; AID238688
Carbonic anhydraseMethanosarcina thermophilaKi6,800.00000.06000.97148.5000AID238607
Carbonic anhydrase 7Homo sapiens (human)Ki1,780.00000.00021.37379.9000AID265737
Carbonic anhydraseMethanothermobacter thermautotrophicus str. Delta HKi44,800.00005.35005.35005.3500AID238958
Carbonic anhydrase 13Mus musculus (house mouse)Ki12,600.00000.00021.39749.9000AID238853
Carbonic anhydrase 5B, mitochondrialHomo sapiens (human)Ki16,000.00000.00001.34129.9700AID238515; AID238688
[prepared from compound, protein, and bioassay information from National Library of Medicine (NLM), extracted Dec-2023]

Biological Processes (15)

Processvia Protein(s)Taxonomy
one-carbon metabolic processCarbonic anhydrase 1Homo sapiens (human)
morphogenesis of an epitheliumCarbonic anhydrase 2Homo sapiens (human)
positive regulation of synaptic transmission, GABAergicCarbonic anhydrase 2Homo sapiens (human)
positive regulation of cellular pH reductionCarbonic anhydrase 2Homo sapiens (human)
angiotensin-activated signaling pathwayCarbonic anhydrase 2Homo sapiens (human)
regulation of monoatomic anion transportCarbonic anhydrase 2Homo sapiens (human)
secretionCarbonic anhydrase 2Homo sapiens (human)
regulation of intracellular pHCarbonic anhydrase 2Homo sapiens (human)
neuron cellular homeostasisCarbonic anhydrase 2Homo sapiens (human)
positive regulation of dipeptide transmembrane transportCarbonic anhydrase 2Homo sapiens (human)
regulation of chloride transportCarbonic anhydrase 2Homo sapiens (human)
carbon dioxide transportCarbonic anhydrase 2Homo sapiens (human)
one-carbon metabolic processCarbonic anhydrase 2Homo sapiens (human)
bicarbonate transportCarbonic anhydrase 4Homo sapiens (human)
one-carbon metabolic processCarbonic anhydrase 4Homo sapiens (human)
detection of chemical stimulus involved in sensory perception of bitter tasteCarbonic anhydrase 6Homo sapiens (human)
one-carbon metabolic processCarbonic anhydrase 6Homo sapiens (human)
one-carbon metabolic processCarbonic anhydrase 5A, mitochondrialHomo sapiens (human)
positive regulation of synaptic transmission, GABAergicCarbonic anhydrase 7Homo sapiens (human)
positive regulation of cellular pH reductionCarbonic anhydrase 7Homo sapiens (human)
neuron cellular homeostasisCarbonic anhydrase 7Homo sapiens (human)
regulation of chloride transportCarbonic anhydrase 7Homo sapiens (human)
regulation of intracellular pHCarbonic anhydrase 7Homo sapiens (human)
one-carbon metabolic processCarbonic anhydrase 7Homo sapiens (human)
response to bacteriumCarbonic anhydrase 5B, mitochondrialHomo sapiens (human)
one-carbon metabolic processCarbonic anhydrase 5B, mitochondrialHomo sapiens (human)
[Information is prepared from geneontology information from the June-17-2024 release]

Molecular Functions (6)

Processvia Protein(s)Taxonomy
arylesterase activityCarbonic anhydrase 1Homo sapiens (human)
carbonate dehydratase activityCarbonic anhydrase 1Homo sapiens (human)
protein bindingCarbonic anhydrase 1Homo sapiens (human)
zinc ion bindingCarbonic anhydrase 1Homo sapiens (human)
hydro-lyase activityCarbonic anhydrase 1Homo sapiens (human)
cyanamide hydratase activityCarbonic anhydrase 1Homo sapiens (human)
arylesterase activityCarbonic anhydrase 2Homo sapiens (human)
carbonate dehydratase activityCarbonic anhydrase 2Homo sapiens (human)
protein bindingCarbonic anhydrase 2Homo sapiens (human)
zinc ion bindingCarbonic anhydrase 2Homo sapiens (human)
cyanamide hydratase activityCarbonic anhydrase 2Homo sapiens (human)
protein bindingCarbonic anhydrase 4Homo sapiens (human)
zinc ion bindingCarbonic anhydrase 4Homo sapiens (human)
carbonate dehydratase activityCarbonic anhydrase 4Homo sapiens (human)
zinc ion bindingCarbonic anhydrase 6Homo sapiens (human)
carbonate dehydratase activityCarbonic anhydrase 6Homo sapiens (human)
carbonate dehydratase activityCarbonic anhydrase 5A, mitochondrialHomo sapiens (human)
zinc ion bindingCarbonic anhydrase 5A, mitochondrialHomo sapiens (human)
zinc ion bindingCarbonic anhydrase 7Homo sapiens (human)
carbonate dehydratase activityCarbonic anhydrase 7Homo sapiens (human)
carbonate dehydratase activityCarbonic anhydrase 5B, mitochondrialHomo sapiens (human)
zinc ion bindingCarbonic anhydrase 5B, mitochondrialHomo sapiens (human)
[Information is prepared from geneontology information from the June-17-2024 release]

Ceullar Components (23)

Processvia Protein(s)Taxonomy
cytosolCarbonic anhydrase 1Homo sapiens (human)
extracellular exosomeCarbonic anhydrase 1Homo sapiens (human)
cytoplasmCarbonic anhydrase 2Homo sapiens (human)
cytosolCarbonic anhydrase 2Homo sapiens (human)
plasma membraneCarbonic anhydrase 2Homo sapiens (human)
myelin sheathCarbonic anhydrase 2Homo sapiens (human)
apical part of cellCarbonic anhydrase 2Homo sapiens (human)
extracellular exosomeCarbonic anhydrase 2Homo sapiens (human)
cytoplasmCarbonic anhydrase 2Homo sapiens (human)
plasma membraneCarbonic anhydrase 2Homo sapiens (human)
apical part of cellCarbonic anhydrase 2Homo sapiens (human)
basolateral plasma membraneCarbonic anhydrase 4Homo sapiens (human)
rough endoplasmic reticulumCarbonic anhydrase 4Homo sapiens (human)
endoplasmic reticulum-Golgi intermediate compartmentCarbonic anhydrase 4Homo sapiens (human)
Golgi apparatusCarbonic anhydrase 4Homo sapiens (human)
trans-Golgi networkCarbonic anhydrase 4Homo sapiens (human)
plasma membraneCarbonic anhydrase 4Homo sapiens (human)
external side of plasma membraneCarbonic anhydrase 4Homo sapiens (human)
cell surfaceCarbonic anhydrase 4Homo sapiens (human)
membraneCarbonic anhydrase 4Homo sapiens (human)
apical plasma membraneCarbonic anhydrase 4Homo sapiens (human)
transport vesicle membraneCarbonic anhydrase 4Homo sapiens (human)
secretory granule membraneCarbonic anhydrase 4Homo sapiens (human)
brush border membraneCarbonic anhydrase 4Homo sapiens (human)
perinuclear region of cytoplasmCarbonic anhydrase 4Homo sapiens (human)
extracellular exosomeCarbonic anhydrase 4Homo sapiens (human)
plasma membraneCarbonic anhydrase 4Homo sapiens (human)
extracellular regionCarbonic anhydrase 6Homo sapiens (human)
extracellular spaceCarbonic anhydrase 6Homo sapiens (human)
cytosolCarbonic anhydrase 6Homo sapiens (human)
extracellular exosomeCarbonic anhydrase 6Homo sapiens (human)
extracellular spaceCarbonic anhydrase 6Homo sapiens (human)
mitochondrial matrixCarbonic anhydrase 5A, mitochondrialHomo sapiens (human)
mitochondrionCarbonic anhydrase 5A, mitochondrialHomo sapiens (human)
cytoplasmCarbonic anhydrase 5A, mitochondrialHomo sapiens (human)
mitochondrionCarbonic anhydrase 5A, mitochondrialHomo sapiens (human)
cytosolCarbonic anhydrase 7Homo sapiens (human)
cytoplasmCarbonic anhydrase 7Homo sapiens (human)
mitochondrionCarbonic anhydrase 5B, mitochondrialHomo sapiens (human)
mitochondrial matrixCarbonic anhydrase 5B, mitochondrialHomo sapiens (human)
mitochondrionCarbonic anhydrase 5B, mitochondrialHomo sapiens (human)
cytoplasmCarbonic anhydrase 5B, mitochondrialHomo sapiens (human)
[Information is prepared from geneontology information from the June-17-2024 release]

Bioassays (33)

Assay IDTitleYearJournalArticle
AID238327Inhibitory constant against carbonic anhydrase II2004Bioorganic & medicinal chemistry letters, Sep-06, Volume: 14, Issue:17
Carbonic anhydrase inhibitors. Inhibition of the beta-class enzyme from the methanoarchaeon Methanobacterium thermoautotrophicum (Cab) with anions.
AID238544Inhibition constant of anion against human carbonic anhydrase isozyme hCA IV2004Bioorganic & medicinal chemistry letters, Dec-06, Volume: 14, Issue:23
Carbonic anhydrase inhibitors: inhibition of the membrane-bound human isozyme IV with anions.
AID238317Inhibitory constant against carbonic anhydrase I2004Bioorganic & medicinal chemistry letters, Sep-06, Volume: 14, Issue:17
Carbonic anhydrase inhibitors. Inhibition of the beta-class enzyme from the methanoarchaeon Methanobacterium thermoautotrophicum (Cab) with anions.
AID238688Inhibitory activity against human carbonic anhydrase V expressed in Escherichia coli2004Bioorganic & medicinal chemistry letters, Nov-01, Volume: 14, Issue:21
Carbonic anhydrase inhibitors. Inhibition of the newly isolated murine isozyme XIII with anions.
AID1278741Inhibition of Vibrio cholerae alpha-carbonic anhydrase preincubated for 15 mins by stopped-flow CO2 hydration assay2016Bioorganic & medicinal chemistry letters, Mar-01, Volume: 26, Issue:5
Anion inhibition studies of the β-carbonic anhydrase from the pathogenic bacterium Vibrio cholerae.
AID552131Inhibition of Stylophora pistillata carbonic anhydrase 2 by stopped-flow CO2 hydration assay2011Bioorganic & medicinal chemistry letters, Jan-15, Volume: 21, Issue:2
Carbonic anhydrase inhibitors. Inhibition studies with anions and sulfonamides of a new cytosolic enzyme from the scleractinian coral Stylophora pistillata.
AID1306530Inhibition of Vibrio cholerae carbonic anhydrase beta preincubated for 15 mins by stopped-flow CO2 hydrase assay2016Bioorganic & medicinal chemistry, 08-15, Volume: 24, Issue:16
Anion inhibition profiles of α-, β- and γ-carbonic anhydrases from the pathogenic bacterium Vibrio cholerae.
AID552128Inhibition of human recombinant CA2 by stopped-flow CO2 hydration assay2011Bioorganic & medicinal chemistry letters, Jan-15, Volume: 21, Issue:2
Carbonic anhydrase inhibitors. Inhibition studies with anions and sulfonamides of a new cytosolic enzyme from the scleractinian coral Stylophora pistillata.
AID552130Inhibition of Stylophora pistillata carbonic anhydrase by stopped-flow CO2 hydration assay2011Bioorganic & medicinal chemistry letters, Jan-15, Volume: 21, Issue:2
Carbonic anhydrase inhibitors. Inhibition studies with anions and sulfonamides of a new cytosolic enzyme from the scleractinian coral Stylophora pistillata.
AID1306525Inhibition of Helicobacter pylori alpha carbonic anhydrase preincubated for 15 mins by stopped-flow CO2 hydrase assay2016Bioorganic & medicinal chemistry, 08-15, Volume: 24, Issue:16
Anion inhibition profiles of α-, β- and γ-carbonic anhydrases from the pathogenic bacterium Vibrio cholerae.
AID238513Inhibition constant of anion against human carbonic anhydrase isozyme hCA I2004Bioorganic & medicinal chemistry letters, Dec-06, Volume: 14, Issue:23
Carbonic anhydrase inhibitors: inhibition of the membrane-bound human isozyme IV with anions.
AID1262264Inhibition of human CA2 incubated for 15 mins prior to testing by stopped flow CO2 hydrase assay2015Bioorganic & medicinal chemistry letters, Dec-01, Volume: 25, Issue:23
Anion and sulfonamide inhibition studies of an α-carbonic anhydrase from the Antarctic hemoglobinless fish Chionodraco hamatus.
AID238687Inhibitory activity against human carbonic anhydrase I expressed in Escherichia coli2004Bioorganic & medicinal chemistry letters, Nov-01, Volume: 14, Issue:21
Carbonic anhydrase inhibitors. Inhibition of the newly isolated murine isozyme XIII with anions.
AID238607Inhibitory constant against Zn-Cam (Methanosarcina thermophila)2004Bioorganic & medicinal chemistry letters, Sep-06, Volume: 14, Issue:17
Carbonic anhydrase inhibitors. Inhibition of the beta-class enzyme from the methanoarchaeon Methanobacterium thermoautotrophicum (Cab) with anions.
AID1278739Inhibition of human carbonic anhydrase 1 preincubated for 15 mins by stopped-flow CO2 hydration assay2016Bioorganic & medicinal chemistry letters, Mar-01, Volume: 26, Issue:5
Anion inhibition studies of the β-carbonic anhydrase from the pathogenic bacterium Vibrio cholerae.
AID1306526Inhibition of Vibrio cholerae alpha carbonic anhydrase preincubated for 15 mins by stopped-flow CO2 hydrase assay2016Bioorganic & medicinal chemistry, 08-15, Volume: 24, Issue:16
Anion inhibition profiles of α-, β- and γ-carbonic anhydrases from the pathogenic bacterium Vibrio cholerae.
AID238958Inhibitory constant against methanoarchaeon Methanobacterium thermoautotrophicum (Cab)2004Bioorganic & medicinal chemistry letters, Sep-06, Volume: 14, Issue:17
Carbonic anhydrase inhibitors. Inhibition of the beta-class enzyme from the methanoarchaeon Methanobacterium thermoautotrophicum (Cab) with anions.
AID552129Inhibition of human recombinant CA6 by stopped-flow CO2 hydration assay2011Bioorganic & medicinal chemistry letters, Jan-15, Volume: 21, Issue:2
Carbonic anhydrase inhibitors. Inhibition studies with anions and sulfonamides of a new cytosolic enzyme from the scleractinian coral Stylophora pistillata.
AID1306532Inhibition of Vibrio cholerae recombinant carbonic anhydrase gamma expressed in Escherichia coli DE3 cells preincubated for 15 mins by stopped-flow CO2 hydrase assay2016Bioorganic & medicinal chemistry, 08-15, Volume: 24, Issue:16
Anion inhibition profiles of α-, β- and γ-carbonic anhydrases from the pathogenic bacterium Vibrio cholerae.
AID1278740Inhibition of human carbonic anhydrase 2 preincubated for 15 mins by stopped-flow CO2 hydration assay2016Bioorganic & medicinal chemistry letters, Mar-01, Volume: 26, Issue:5
Anion inhibition studies of the β-carbonic anhydrase from the pathogenic bacterium Vibrio cholerae.
AID1278742Inhibition of recombinant Vibrio cholerae beta-carbonic anhydrase expressed in competent Escherichia coli BL21(DE3) cells preincubated for 15 mins by stopped-flow CO2 hydration assay2016Bioorganic & medicinal chemistry letters, Mar-01, Volume: 26, Issue:5
Anion inhibition studies of the β-carbonic anhydrase from the pathogenic bacterium Vibrio cholerae.
AID238853Inhibitory activity against mouse carbonic anhydrase XIII expressed in Escherichia coli TOP 102004Bioorganic & medicinal chemistry letters, Nov-01, Volume: 14, Issue:21
Carbonic anhydrase inhibitors. Inhibition of the newly isolated murine isozyme XIII with anions.
AID238515Inhibition constant of anion against human carbonic anhydrase isozyme hCA V2004Bioorganic & medicinal chemistry letters, Dec-06, Volume: 14, Issue:23
Carbonic anhydrase inhibitors: inhibition of the membrane-bound human isozyme IV with anions.
AID238542Inhibition constant of anion against human carbonic anhydrase isozyme hCA II2004Bioorganic & medicinal chemistry letters, Dec-06, Volume: 14, Issue:23
Carbonic anhydrase inhibitors: inhibition of the membrane-bound human isozyme IV with anions.
AID1262263Inhibition of human CA1 incubated for 15 mins prior to testing by stopped flow CO2 hydrase assay2015Bioorganic & medicinal chemistry letters, Dec-01, Volume: 25, Issue:23
Anion and sulfonamide inhibition studies of an α-carbonic anhydrase from the Antarctic hemoglobinless fish Chionodraco hamatus.
AID238653Inhibitory constant against carbonic anhydrase IV; nt= not tested2004Bioorganic & medicinal chemistry letters, Sep-06, Volume: 14, Issue:17
Carbonic anhydrase inhibitors. Inhibition of the beta-class enzyme from the methanoarchaeon Methanobacterium thermoautotrophicum (Cab) with anions.
AID238715Inhibitory activity against human carbonic anhydrase II expressed in Escherichia coli2004Bioorganic & medicinal chemistry letters, Nov-01, Volume: 14, Issue:21
Carbonic anhydrase inhibitors. Inhibition of the newly isolated murine isozyme XIII with anions.
AID1306524Inhibition of human carbonic anhydrase 2 preincubated for 15 mins by stopped-flow CO2 hydrase assay2016Bioorganic & medicinal chemistry, 08-15, Volume: 24, Issue:16
Anion inhibition profiles of α-, β- and γ-carbonic anhydrases from the pathogenic bacterium Vibrio cholerae.
AID238546Inhibition constant of anion against human carbonic anhydrase isozyme hCA IX2004Bioorganic & medicinal chemistry letters, Dec-06, Volume: 14, Issue:23
Carbonic anhydrase inhibitors: inhibition of the membrane-bound human isozyme IV with anions.
AID265737Inhibition of human recombinant CA72006Bioorganic & medicinal chemistry letters, Jun-15, Volume: 16, Issue:12
Carbonic anhydrase inhibitors: inhibition of the cytosolic human isozyme VII with anions.
AID552127Inhibition of human recombinant CA1 by stopped-flow CO2 hydration assay2011Bioorganic & medicinal chemistry letters, Jan-15, Volume: 21, Issue:2
Carbonic anhydrase inhibitors. Inhibition studies with anions and sulfonamides of a new cytosolic enzyme from the scleractinian coral Stylophora pistillata.
AID1306523Inhibition of human carbonic anhydrase 1 preincubated for 15 mins by stopped-flow CO2 hydrase assay2016Bioorganic & medicinal chemistry, 08-15, Volume: 24, Issue:16
Anion inhibition profiles of α-, β- and γ-carbonic anhydrases from the pathogenic bacterium Vibrio cholerae.
AID1262267Inhibition of Chionodraco hamatus alphaCA incubated for 15 mins prior to testing by stopped flow CO2 hydrase assay2015Bioorganic & medicinal chemistry letters, Dec-01, Volume: 25, Issue:23
Anion and sulfonamide inhibition studies of an α-carbonic anhydrase from the Antarctic hemoglobinless fish Chionodraco hamatus.
[information is prepared from bioassay data collected from National Library of Medicine (NLM), extracted Dec-2023]

Research

Studies (889)

TimeframeStudies, This Drug (%)All Drugs %
pre-1990309 (34.76)18.7374
1990's107 (12.04)18.2507
2000's145 (16.31)29.6817
2010's219 (24.63)24.3611
2020's109 (12.26)2.80
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Market Indicators

Research Demand Index: 77.35

According to the monthly volume, diversity, and competition of internet searches for this compound, as well the volume and growth of publications, there is estimated to be very strong demand-to-supply ratio for research on this compound.

MetricThis Compound (vs All)
Research Demand Index77.35 (24.57)
Research Supply Index6.82 (2.92)
Research Growth Index4.67 (4.65)
Search Engine Demand Index137.30 (26.88)
Search Engine Supply Index2.00 (0.95)

This Compound (77.35)

All Compounds (24.57)

Study Types

Publication TypeThis drug (%)All Drugs (%)
Trials3 (0.33%)5.53%
Reviews21 (2.31%)6.00%
Case Studies6 (0.66%)4.05%
Observational1 (0.11%)0.25%
Other879 (96.59%)84.16%
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]