Page last updated: 2024-12-07

norketamine

Description Research Excerpts Clinical Trials Roles Classes Pathways Study Profile Bioassays Related Drugs Related Conditions Protein Interactions Research Growth Market Indicators

Description

norketamine: metabolite of ketamine; RN given refers to cpd without isomeric designation [Medical Subject Headings (MeSH), National Library of Medicine, extracted Dec-2023]

Cross-References

ID SourceID
PubMed CID123767
CHEMBL ID1039
CHEBI ID91519
SCHEMBL ID3390132
MeSH IDM0103668

Synonyms (25)

Synonym
CHEMBL1039
BRD-A10355991-003-01-8
norketamine
NCGC00159535-01
2-amino-2-(2-chlorophenyl)cyclohexan-1-one
35211-10-0
2-amino-2-(o-chlorophenyl)cyclohexanone
2-(o-chlorophenyl)-2-aminocyclohexanone
(+/-)-norketamine
SCHEMBL3390132
AKOS005215885
cyclohexanone, 2-amino-2-(2-chlorophenyl)-
unii-xqy6jvf94x
xqy6jvf94x ,
n-demethylketamine
n-desmethylketamine
2-amino-2-(o-chlorophenyl) cyclohexanone
J397.916D ,
65329-10-4
CHEBI:91519
ketamine-m nor
DTXSID40891434
Q20164391
W12824
norketamine (1.0mg/ml in methanol)

Research Excerpts

Toxicity

ExcerptReferenceRelevance
" Pharmacokinetics, pharmacodynamics (brain-derived neurotropic factor), adverse events, and vital signs were assessed up to 72 hours."( Ascending-Dose Study of Controlled-Release Ketamine Tablets in Healthy Volunteers: Pharmacokinetics, Pharmacodynamics, Safety, and Tolerability.
Glue, P; Hung, CT; Hung, N; Lam, F; Medlicott, NJ; Surman, P, 2020
)
0.56
" Both substances have been detected in environmental matrices, but studies about their enantioselective toxic effects are scarce."( Ketamine and Norketamine: Enantioresolution and Enantioselective Aquatic Ecotoxicity Studies.
Carrola, JS; Gonçalves, R; M F Gonçalves, V; Pereira, JA; Pérez-Pereira, A; Pires, C; Ribeiro, C; Teles, F; Tiritan, ME, 2022
)
1.09

Pharmacokinetics

The aims of this study were to measure plasma levels of R- and S-ketamine and their major metabolites. Norketamine rapidly appeared in plasma following ketamine administration and had a terminal half-life of 63.

ExcerptReferenceRelevance
" The elimination half-life values of the parent drug for both biological fluids were similar (4."( Pharmacokinetics and distribution of ketamine after extradural administration to dogs.
Calvo, MB; Dominguez-Gil, A; Gascon, AR; Hernandez, R; Muriel, C; Pedraz, JL; Torres, LM, 1991
)
0.28
"There are still divergent opinions regarding the pharmacodynamic effects of ketamine on the brain."( Cerebral pharmacodynamics of anaesthetic and subanaesthetic doses of ketamine in the normoventilated pig.
Akeson, J; Björkman, S; Helfer, M; Messeter, K; Rosén, I, 1993
)
0.29
" The increase in the volume of distribution is greater than the increase in clearance, resulting in a longer estimated half-life of ketamine in this patient group."( Pharmacokinetics and haemodynamics of ketamine in intensive care patients with brain or spinal cord injury.
Bodonian, C; Bolon, M; Boulieu, R; Hijazi, Y; Salord, F, 2003
)
0.32
" Norketamine rapidly appeared in plasma following ketamine administration and had a terminal half-life of 63."( Pharmacokinetics of ketamine and its metabolite, norketamine, after intravenous administration of a bolus of ketamine to isoflurane-anesthetized dogs.
Ilkiw, JE; Pypendop, BH, 2005
)
1.49
"The pharmacokinetic parameters of S- and R-ketamine administered in the racemic mixture or S-ketamine administered separately did not differ significantly."( Stereoselective pharmacokinetics of ketamine and norketamine after racemic ketamine or S-ketamine administration during isoflurane anaesthesia in Shetland ponies.
Knobloch, M; Kronen, PW; Landoni, MF; Larenza, MP; Levionnois, OL; Schatzmann, U; Theurillat, R; Thormann, W, 2007
)
0.59
" The first-order elimination rate constant was significantly higher and elimination half-life and mean residence time were lower for S-ketamine after S-ketamine compared to R-/S-ketamine administration."( Stereoselective pharmacokinetics of ketamine and norketamine after racemic ketamine or S-ketamine administration in Shetland ponies sedated with xylazine.
Knobloch, M; Kronen, PW; Landoni, MF; Larenza, MP; Levionnois, OL; Schatzmann, U; Theurillat, R; Thormann, W, 2008
)
0.6
" Significant differences between treatments were found for the AUC of S-ketamine and within the racemic ketamine CRI for the AUC and Cmax of norketamine isomers."( Stereoselective pharmacokinetics of ketamine and norketamine after constant rate infusion of a subanesthetic dose of racemic ketamine or S-ketamine in Shetland ponies.
Landoni, MF; Larenza, MP; Levionnois, OL; Peterbauer, C; Schatzmann, U; Spadavecchia, C; Thormann, W, 2009
)
0.81
"Sex differences observed were restricted to pharmacokinetic model parameters, with a 20% greater elimination clearance of S(+)-ketamine and S(+)-norketamine in women resulting in higher drug plasma concentrations in men."( S(+)-ketamine effect on experimental pain and cardiac output: a population pharmacokinetic-pharmacodynamic modeling study in healthy volunteers.
Bauer, M; Dahan, A; Kest, B; Mooren, R; Olofsen, E; Sarton, E; Sigtermans, M, 2009
)
0.55
" The pharmacodynamic responses to racemic ketamine and norketamine were examined."( Pharmacodynamic profiles of ketamine (R)- and (S)- with 5-day inpatient infusion for the treatment of complex regional pain syndrome.
Goldberg, ME; Mager, DE; Schwartzman, RJ; Torjman, MC; Wainer, IW,
)
0.38
" (R)- and (S)-Ketamine and (R)- and (S)-norketamine pharmacokinetic and pharmacodynamic studies were performed."( Enantioselective pharmacokinetics of (R)- and (S)-ketamine after a 5-day infusion in patients with complex regional pain syndrome.
Goldberg, ME; Mager, DE; Schwartzman, RJ; Torjman, MC; Wainer, IW, 2011
)
0.64
" When comparing the pharmacokinetic parameters of the patients who responded to ketamine treatment with those who did not, no differences were observed in ketamine clearance and the first-order elimination of norketamine."( Enantioselective pharmacokinetics of (R)- and (S)-ketamine after a 5-day infusion in patients with complex regional pain syndrome.
Goldberg, ME; Mager, DE; Schwartzman, RJ; Torjman, MC; Wainer, IW, 2011
)
0.56
"To construct a population pharmacokinetic (popPK) model for ketamine (Ket), norketamine (norKet), dehydronorketamine (DHNK), hydroxynorketamine (2S,6S;2R,6R)-HNK) and hydroxyketamine (HK) in patients with treatment-resistant bipolar depression."( Simultaneous population pharmacokinetic modelling of ketamine and three major metabolites in patients with treatment-resistant bipolar depression.
Brutsche, NE; Ibrahim, L; Luckenbaugh, DA; Mager, DE; Moaddel, R; Venkata, SL; Wainer, IW; Zarate, CA; Zhao, X, 2012
)
0.61
"001), but shortened only moderately the elimination half-life of intravenous and oral S-ketamine."( Rifampicin has a profound effect on the pharmacokinetics of oral S-ketamine and less on intravenous S-ketamine.
Hagelberg, NM; Kurkinen, KJ; Laine, K; Neuvonen, PJ; Olkkola, KT; Peltoniemi, MA; Saari, TI, 2012
)
0.38
" A population pharmacokinetic model was built to describe S-ketamine and norketamine pharmacokinetics."( Population pharmacokinetics of S-ketamine and norketamine in healthy volunteers after intravenous and oral dosing.
Backman, JT; Fanta, S; Kalso, E; Kinnunen, M, 2015
)
0.91
" Because of extensive first-pass metabolism, oral bioavailability is poor and ketamine is vulnerable to pharmacokinetic drug interactions."( Ketamine: A Review of Clinical Pharmacokinetics and Pharmacodynamics in Anesthesia and Pain Therapy.
Hagelberg, NM; Olkkola, KT; Peltoniemi, MA; Saari, TI, 2016
)
0.43
"The aims of this study were to measure plasma levels of R- and S-ketamine and their major metabolites R- and S-norketamine following single intravenous bolus administration of racemic or S-ketamine in sevoflurane anaesthetised dogs and to calculate the relevant pharmacokinetic profiles."( Pharmacokinetics of ketamine and norketamine enantiomers after racemic or S-ketamine IV bolus administration in dogs during sevoflurane anaesthesia.
Barbarossa, A; Bektas, RN; Bettschart-Wolfensberger, R; Hartnack, S; Kutter, AP; Romagnoli, N; Roncada, P, 2017
)
0.95
" A pharmacokinetic study demonstrated an exponential decrease in the plasma concentration of ketamine after intravenous application and much slower kinetics for intraperitoneal application."( Rapid electrophoretic monitoring of the anaesthetic ketamine and its metabolite norketamine in rat blood using a contactless conductivity detector to study the pharmacokinetics.
Sommerová, B; Tůma, P; Vaculín, Š, 2019
)
0.74
" Area under the concentration-time curve and peak concentration were dose proportional."( Ascending-Dose Study of Controlled-Release Ketamine Tablets in Healthy Volunteers: Pharmacokinetics, Pharmacodynamics, Safety, and Tolerability.
Glue, P; Hung, CT; Hung, N; Lam, F; Medlicott, NJ; Surman, P, 2020
)
0.56
"The model is of adequate quality for use in future pharmacokinetic and pharmacodynamic studies into the efficacy and side-effects of ketamine and metabolites."( Pharmacokinetics of ketamine and its major metabolites norketamine, hydroxynorketamine, and dehydronorketamine: a model-based analysis.
Aarts, L; Dahan, A; Jonkman, K; Kamp, J; Niesters, M; Olofsen, E; van Velzen, M, 2020
)
0.81
"During drinking of 40% alcohol, the AUC(0-t), AUC(0-∞), and Cmax of ketamine and norketamine significantly increased, while V and CL significantly decreased with time (p < 0."( Effects of long-term alcohol exposure on the pharmacokinetic profiles of ketamine and norketamine in rats.
Chen, Y; Hu, L; Wen, C; Wu, Y; Ying, L; Zhong, Z, 2021
)
1.07
"The recent repurposing of ketamine as treatment for pain and depression has increased the need for accurate population pharmacokinetic (PK) models to inform the design of new clinical trials."( Predictive performance of parent-metabolite population pharmacokinetic models of (S)-ketamine in healthy volunteers.
Bergmann, KR; Jacobs, G; Otto, ME; van Esdonk, MJ, 2021
)
0.62

Bioavailability

Plasma concentrations of ketamine and norketamine were measured in eight children. Low bioavailability probably due to incomplete absorption from the rectum and a high 'first-pass' metabolism.

ExcerptReferenceRelevance
" Plasma concentrations of ketamine and norketamine were measured in eight children and revealed a pharmacokinetic pattern indicating comparatively low bioavailability probably due to incomplete absorption from the rectum and a high 'first-pass' metabolism."( Rectal ketamine for induction of anaesthesia in children.
Holasek, J; Idvall, J; Stenberg, P, 1983
)
0.54
"The present study was designed to evaluate the oral efficacy and bioavailability of ketamine."( Oral ketamine is antinociceptive in the rat formalin test: role of the metabolite, norketamine.
Elliott, KJ; Gorman, AL; Inturrisi, CE; Shimoyama, M; Shimoyama, N, 1999
)
0.53
" The bioavailability of the tablet was estimated to be approximately 20%; the area under the plasma concentration-time curve, (AUC)(0-->8 h), of norketamine was approximately 500 ng h/ml in both enantiomers."( Plasma concentration profiles of ketamine and norketamine after administration of various ketamine preparations to healthy Japanese volunteers.
Aoyama, T; Ashizawa, N; Hiraishi, T; Iga, T; Kariya, S; Ohtani, M; Uchino, K; Yamada, Y; Yamamura, Y; Yanagihara, Y, 2003
)
0.78
" The objective of the study was to develop a lozenge formulation of ketamine for use in patients with neuropathic pain, and to investigate its storage stability and bioavailability after oral or sublingual administration."( Development of a sublingual/oral formulation of ketamine for use in neuropathic pain: Preliminary findings from a three-way randomized, crossover study.
Chong, C; Ilett, KF; Jenkins, B; Page-Sharp, M; Schug, SA, 2009
)
0.35
" Bioavailability after both oral and sublingual administration was evaluated in six patients with chronic neuropathic pain."( Development of a sublingual/oral formulation of ketamine for use in neuropathic pain: Preliminary findings from a three-way randomized, crossover study.
Chong, C; Ilett, KF; Jenkins, B; Page-Sharp, M; Schug, SA, 2009
)
0.35
" Bioavailability was sufficiently high and reproducible to support its use in routine pain management."( Development of a sublingual/oral formulation of ketamine for use in neuropathic pain: Preliminary findings from a three-way randomized, crossover study.
Chong, C; Ilett, KF; Jenkins, B; Page-Sharp, M; Schug, SA, 2009
)
0.35
" There is low relative bioavailability (<0."( Exploring the pharmacokinetics of oral ketamine in children undergoing burns procedures.
Anderson, BJ; Brunette, KE; Herd, DW; Schulein, S; Thomas, J; Wiesner, L, 2011
)
0.37
" The oral bioavailability of S-ketamine was low, 8% (11% interindividual variability), and its clearance was high, 95 L/h/70 kg (13% interindividual variability)."( Population pharmacokinetics of S-ketamine and norketamine in healthy volunteers after intravenous and oral dosing.
Backman, JT; Fanta, S; Kalso, E; Kinnunen, M, 2015
)
0.68
" Because of extensive first-pass metabolism, oral bioavailability is poor and ketamine is vulnerable to pharmacokinetic drug interactions."( Ketamine: A Review of Clinical Pharmacokinetics and Pharmacodynamics in Anesthesia and Pain Therapy.
Hagelberg, NM; Olkkola, KT; Peltoniemi, MA; Saari, TI, 2016
)
0.43
"Cell membrane permeability is an important determinant for oral absorption and bioavailability of a drug molecule."( Highly predictive and interpretable models for PAMPA permeability.
Jadhav, A; Kerns, E; Nguyen, K; Shah, P; Sun, H; Xu, X; Yan, Z; Yu, KR, 2017
)
0.46
" Additionally, an ∼85% correlation was obtained between PAMPA pH 5 permeability and in vivo oral bioavailability in mice and rats."( Using in vitro ADME data for lead compound selection: An emphasis on PAMPA pH 5 permeability and oral bioavailability.
Itkin, M; Kabir, M; Mathé, EA; Nguyễn, ÐT; Padilha, EC; Shah, P; Shinn, P; Siramshetty, V; Wang, AQ; Williams, J; Xu, X; Yu, KR; Zhao, T, 2022
)
0.72
"Absorption of ketamine is rapid though the rate of uptake and bioavailability is determined by the route of exposure."( The clinical toxicology of ketamine.
Gee, P; Mackenzie, E; Schep, LJ; Slaughter, RJ; Watts, M, 2023
)
0.91
" Despite bioavailability and peak plasma concentrations both being lower than when administered parenterally, evidence suggests that low-dose oral ketamine is clinically effective in treating pain."( Oral ketamine may offer a solution to the ketamine conundrum.
Can, AT; Dutton, M; Hermens, DF; Lagopoulos, J, 2023
)
0.91

Dosage Studied

ExcerptRelevanceReference
" We propose that the type of ketamine preparation should be selected in accordance with the patient's disease condition and the required dosage amount of ketamine."( Plasma concentration profiles of ketamine and norketamine after administration of various ketamine preparations to healthy Japanese volunteers.
Aoyama, T; Ashizawa, N; Hiraishi, T; Iga, T; Kariya, S; Ohtani, M; Uchino, K; Yamada, Y; Yamamura, Y; Yanagihara, Y, 2003
)
0.58
" There was a direct correlation between the concentration of K in cavy hair and the dose and DHNK was detected only in high dosage group."( Hair analysis for ketamine and its metabolites.
Shen, M; Xiang, P; Zhuo, X, 2006
)
0.33
" The ELISA kit was validated to include an assessment of the dose-response curve, intra- and interday precision, limit of detection (LOD), and cross-reactivity."( Validation of an enzyme-linked immunosorbent assay screening method and a liquid chromatography-tandem mass spectrometry confirmation method for the identification and quantification of ketamine and norketamine in urine samples from Malaysia.
Anderson, RA; Harun, N; Miller, EI,
)
0.32
" Higher dosing elicited significantly more side effects."( Effects of low-dose intranasal (S)-ketamine in patients with neuropathic pain.
Azad, SC; Beyer, A; Huge, V; Lauchart, M; Magerl, W; Schelling, G; Thieme, D, 2010
)
0.36
" The findings suggest that the dosage of S-ketamine should be reduced in patients receiving ticlopidine."( Exposure to oral S-ketamine is unaffected by itraconazole but greatly increased by ticlopidine.
Hagelberg, NM; Laine, K; Neuvonen, PJ; Olkkola, KT; Peltoniemi, MA; Reponen, P; Saari, TI; Turpeinen, M, 2011
)
0.37
" The dose-response relationships of all 3 compounds in the forced swim test were also investigated in mice 30 min after IP administration."( Antidepressant-like effects of ketamine, norketamine and dehydronorketamine in forced swim test: Role of activity at NMDA receptor.
Drabik, U; Gajdosz, R; Librowski, T; Nowak, G; Popik, P; Sałat, K; Siwek, A; Starowicz, G, 2015
)
0.68
" Animal studies have shown that ketamine has neuroprotective properties, and there is no evidence of elevated intracranial pressure after ketamine dosing in humans."( Ketamine: A Review of Clinical Pharmacokinetics and Pharmacodynamics in Anesthesia and Pain Therapy.
Hagelberg, NM; Olkkola, KT; Peltoniemi, MA; Saari, TI, 2016
)
0.43
" We hypothesized that oral controlled-release ketamine tablets would improve safety and tolerability compared with injected ketamine by reducing peak ketamine exposures compared with dosing by injection."( Ascending-Dose Study of Controlled-Release Ketamine Tablets in Healthy Volunteers: Pharmacokinetics, Pharmacodynamics, Safety, and Tolerability.
Glue, P; Hung, CT; Hung, N; Lam, F; Medlicott, NJ; Surman, P, 2020
)
0.56
" This validated method was applicable to determine the stereoselective pharmacokinetic profiles of (R,S)-Ket, (R,S)-NK, and (2R,6R;2S,6S)-HNK in plasma and brain collected from individual mice after a single intraperitoneal dosing of racemic Ket at an antidepressant dose."( Chiral LC-MS/MS method for the simultaneous determination of (R,S)-ketamine, (R,S)-norketamine, and (2R,6R;2S,6S)-hydroxynorketamine in mouse plasma and brain.
Endo, H; Mizuno-Yasuhira, A; Toki, H; Yamaguchi, JI, 2023
)
1.14
[information is derived through text-mining from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Drug Classes (1)

ClassDescription
organochlorine compoundAn organochlorine compound is a compound containing at least one carbon-chlorine bond.
[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]

Bioassays (11)

Assay IDTitleYearJournalArticle
AID1508630Primary qHTS for small molecule stabilizers of the endoplasmic reticulum resident proteome: Secreted ER Calcium Modulated Protein (SERCaMP) assay2021Cell reports, 04-27, Volume: 35, Issue:4
A target-agnostic screen identifies approved drugs to stabilize the endoplasmic reticulum-resident proteome.
AID1508591NCATS Rat Liver Microsome Stability Profiling2020Scientific reports, 11-26, Volume: 10, Issue:1
Retrospective assessment of rat liver microsomal stability at NCATS: data and QSAR models.
AID1347154Primary screen GU AMC qHTS for Zika virus inhibitors2020Proceedings of the National Academy of Sciences of the United States of America, 12-08, Volume: 117, Issue:49
Therapeutic candidates for the Zika virus identified by a high-throughput screen for Zika protease inhibitors.
AID1508612NCATS Parallel Artificial Membrane Permeability Assay (PAMPA) Profiling2017Bioorganic & medicinal chemistry, 02-01, Volume: 25, Issue:3
Highly predictive and interpretable models for PAMPA permeability.
AID1645848NCATS Kinetic Aqueous Solubility Profiling2019Bioorganic & medicinal chemistry, 07-15, Volume: 27, Issue:14
Predictive models of aqueous solubility of organic compounds built on A large dataset of high integrity.
AID1645871NCATS Parallel Artificial Membrane Permeability Assay (PAMPA) Profiling in pH 5 buffer2022Bioorganic & medicinal chemistry, 02-15, Volume: 56Using in vitro ADME data for lead compound selection: An emphasis on PAMPA pH 5 permeability and oral bioavailability.
AID21247Partition coefficient was expressed as the ratio of the equilibrium concentration in chloroform solvent to that in an equal volume of pH 7.4 aqueous buffer1986Journal of medicinal chemistry, Nov, Volume: 29, Issue:11
Comparative pharmacology in the rat of ketamine and its two principal metabolites, norketamine and (Z)-6-hydroxynorketamine.
AID21248Partition coefficient was expressed as the ratio of the equilibrium concentration in n-heptane solvent to that in an equal volume of pH 7.4 aqueous buffer1986Journal of medicinal chemistry, Nov, Volume: 29, Issue:11
Comparative pharmacology in the rat of ketamine and its two principal metabolites, norketamine and (Z)-6-hydroxynorketamine.
AID175138Compound was administered to male Sprague-Dawley rats (250-300 g) by intravenous (iv) bolus injection at a dose of 40 mg/kg1986Journal of medicinal chemistry, Nov, Volume: 29, Issue:11
Comparative pharmacology in the rat of ketamine and its two principal metabolites, norketamine and (Z)-6-hydroxynorketamine.
AID21246Partition coefficient was expressed as the ratio of the equilibrium concentration in benzene solvent to that in an equal volume of pH 7.4 aqueous buffer1986Journal of medicinal chemistry, Nov, Volume: 29, Issue:11
Comparative pharmacology in the rat of ketamine and its two principal metabolites, norketamine and (Z)-6-hydroxynorketamine.
AID175137Compound was administered to male Sprague-Dawley rats (250-300 g) by intravenous (iv) bolus injection at a dose of 40 mg/kg1986Journal of medicinal chemistry, Nov, Volume: 29, Issue:11
Comparative pharmacology in the rat of ketamine and its two principal metabolites, norketamine and (Z)-6-hydroxynorketamine.
[information is prepared from bioassay data collected from National Library of Medicine (NLM), extracted Dec-2023]

Research

Studies (207)

TimeframeStudies, This Drug (%)All Drugs %
pre-199013 (6.28)18.7374
1990's16 (7.73)18.2507
2000's46 (22.22)29.6817
2010's101 (48.79)24.3611
2020's31 (14.98)2.80
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Market Indicators

Research Demand Index: 49.17

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 strong demand-to-supply ratio for research on this compound.

MetricThis Compound (vs All)
Research Demand Index49.17 (24.57)
Research Supply Index5.53 (2.92)
Research Growth Index5.05 (4.65)
Search Engine Demand Index76.42 (26.88)
Search Engine Supply Index1.98 (0.95)

This Compound (49.17)

All Compounds (24.57)

Study Types

Publication TypeThis drug (%)All Drugs (%)
Trials32 (14.55%)5.53%
Reviews11 (5.00%)6.00%
Case Studies4 (1.82%)4.05%
Observational2 (0.91%)0.25%
Other171 (77.73%)84.16%
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]