Cresolphthalein is a pH indicator that is used in chemistry. It is a colorless solution at low pH values (below 8.2), but turns pink or purple in alkaline solutions (above 8.2). Cresolphthalein is also used as a reagent in analytical chemistry, for example, in the determination of the concentration of heavy metals in water. Cresolphthalein is synthesized by the reaction of phthalic anhydride with o-cresol. It is a triarylmethane dye, similar to phenolphthalein. It has a molecular weight of 318.33 g/mol. Cresolphthalein is a weak acid, and its acidic form is colorless, while its basic form is pink. This change in color is due to the formation of a quinoid structure. Cresolphthalein is not very soluble in water, but it is soluble in alcohol and other organic solvents.'
cresolphthalein: structure [Medical Subject Headings (MeSH), National Library of Medicine, extracted Dec-2023]
| ID Source | ID |
|---|---|
| PubMed CID | 68995 |
| CHEMBL ID | 1443546 |
| SCHEMBL ID | 404777 |
| MeSH ID | M0055355 |
| Synonym |
|---|
| 596-27-0 |
| MLS000522129 |
| smr000132537 |
| EU-0098536 |
| inchi=1/c22h18o4/c1-13-11-15(7-9-19(13)23)22(16-8-10-20(24)14(2)12-16)18-6-4-3-5-17(18)21(25)26-22/h3-12,23-24h,1-2h |
| phenolphthalein, 3',3''-dimethyl- |
| cresolphthalein |
| 3,3-bis(4-hydroxy-m-tolyl)phthalide |
| brn 0310554 |
| einecs 209-881-8 |
| 3',3''-dimethylphenolphthalein |
| 1(3h)-isobenzofuranone, 3,3-bis(4-hydroxy-3-methylphenyl)- |
| o-cresolphthalein |
| o-cresolphthalein, indicator grade |
| 3,3'-dimethylphenolphthalein |
| 3,3-bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1-one |
| 3,3-bis(4-hydroxy-3-methylphenyl)-(3h)-isobenzofuranone |
| A832391 |
| NCGC00245929-01 |
| xou2d9049g , |
| 5-18-04-00193 (beilstein handbook reference) |
| unii-xou2d9049g |
| FT-0632480 |
| AKOS015903192 |
| cresolphthalein, o- |
| o-cresolphthalein [mi] |
| 3,3-bis(4-hydroxy-3-methylphenyl)-1(3h)-isobenzofuranone |
| 3,3-bis(4-hydroxy-3-methyl-phenyl)isobenzofuran-1-one |
| DTXSID9060491 |
| SCHEMBL404777 |
| 3,3-bis(4-hydroxy-3-methylphenyl)isobenzofuran-1(3h)-one |
| J-610030 |
| W-105311 |
| CHEMBL1443546 |
| 3,3-bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1(3h)-one # |
| CPBJMKMKNCRKQB-UHFFFAOYSA-N |
| mfcd00005912 |
| STL453800 |
| 3,3-bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1(3h)-one |
| o-cresolphthalein (0.04% in ca. 95% ethanol) [for ph determination] |
| ortho-cresolphthalein |
| 3,3-bis(4-hydroxy-3-methylphenyl)isobenzofuran-1-one |
| AS-14836 |
| Q15634165 |
| D89241 |
| Protein | Taxonomy | Measurement | Average (µ) | Min (ref.) | Avg (ref.) | Max (ref.) | Bioassay(s) |
|---|---|---|---|---|---|---|---|
| Chain A, MAJOR APURINIC/APYRIMIDINIC ENDONUCLEASE | Homo sapiens (human) | Potency | 31.6228 | 0.0032 | 45.4673 | 12,589.2998 | AID2517 |
| Chain A, TYROSYL-DNA PHOSPHODIESTERASE | Homo sapiens (human) | Potency | 19.9526 | 0.0040 | 23.8416 | 100.0000 | AID485290 |
| Chain A, JmjC domain-containing histone demethylation protein 3A | Homo sapiens (human) | Potency | 44.6684 | 0.6310 | 35.7641 | 100.0000 | AID504339 |
| glp-1 receptor, partial | Homo sapiens (human) | Potency | 28.1838 | 0.0184 | 6.8060 | 14.1254 | AID624417 |
| TDP1 protein | Homo sapiens (human) | Potency | 29.0929 | 0.0008 | 11.3822 | 44.6684 | AID686978 |
| thioredoxin glutathione reductase | Schistosoma mansoni | Potency | 44.6684 | 0.1000 | 22.9075 | 100.0000 | AID485364 |
| Smad3 | Homo sapiens (human) | Potency | 35.4813 | 0.0052 | 7.8098 | 29.0929 | AID588855 |
| isocitrate dehydrogenase 1, partial | Homo sapiens (human) | Potency | 52.1194 | 6.3096 | 27.0990 | 79.4328 | AID602179 |
| bromodomain adjacent to zinc finger domain 2B | Homo sapiens (human) | Potency | 50.1187 | 0.7079 | 36.9043 | 89.1251 | AID504333 |
| euchromatic histone-lysine N-methyltransferase 2 | Homo sapiens (human) | Potency | 89.1251 | 0.0355 | 20.9770 | 89.1251 | AID504332 |
| DNA polymerase beta | Homo sapiens (human) | Potency | 35.4813 | 0.0224 | 21.0102 | 89.1251 | AID485314 |
| DNA polymerase eta isoform 1 | Homo sapiens (human) | Potency | 50.3852 | 0.1000 | 28.9256 | 213.3130 | AID588591; AID720502 |
| DNA polymerase iota isoform a (long) | Homo sapiens (human) | Potency | 56.2341 | 0.0501 | 27.0736 | 89.1251 | AID588590 |
| lethal(3)malignant brain tumor-like protein 1 isoform I | Homo sapiens (human) | Potency | 39.8107 | 0.0752 | 15.2253 | 39.8107 | AID485360 |
| geminin | Homo sapiens (human) | Potency | 16.0892 | 0.0046 | 11.3741 | 33.4983 | AID624296; AID624297 |
| survival motor neuron protein isoform d | Homo sapiens (human) | Potency | 0.0224 | 0.1259 | 12.2344 | 35.4813 | AID1458 |
| lamin isoform A-delta10 | Homo sapiens (human) | Potency | 35.4813 | 0.8913 | 12.0676 | 28.1838 | AID1487 |
| Rap guanine nucleotide exchange factor 4 | Homo sapiens (human) | Potency | 79.4328 | 3.9811 | 46.7448 | 112.2020 | AID720708 |
| [prepared from compound, protein, and bioassay information from National Library of Medicine (NLM), extracted Dec-2023] | |||||||
| Process | via Protein(s) | Taxonomy |
|---|---|---|
| guanyl-nucleotide exchange factor activity | Rap guanine nucleotide exchange factor 4 | Homo sapiens (human) |
| protein binding | Rap guanine nucleotide exchange factor 4 | Homo sapiens (human) |
| cAMP binding | Rap guanine nucleotide exchange factor 4 | Homo sapiens (human) |
| protein-macromolecule adaptor activity | Rap guanine nucleotide exchange factor 4 | Homo sapiens (human) |
| small GTPase binding | Rap guanine nucleotide exchange factor 4 | Homo sapiens (human) |
| [Information is prepared from geneontology information from the June-17-2024 release] | ||
| Process | via Protein(s) | Taxonomy |
|---|---|---|
| cytosol | Rap guanine nucleotide exchange factor 4 | Homo sapiens (human) |
| plasma membrane | Rap guanine nucleotide exchange factor 4 | Homo sapiens (human) |
| membrane | Rap guanine nucleotide exchange factor 4 | Homo sapiens (human) |
| hippocampal mossy fiber to CA3 synapse | Rap guanine nucleotide exchange factor 4 | Homo sapiens (human) |
| plasma membrane | Rap guanine nucleotide exchange factor 4 | Homo sapiens (human) |
| [Information is prepared from geneontology information from the June-17-2024 release] | ||
| Assay ID | Title | Year | Journal | Article |
|---|---|---|---|---|
| AID1745845 | Primary qHTS for Inhibitors of ATXN expression | |||
| AID588501 | High-throughput multiplex microsphere screening for inhibitors of toxin protease, specifically Lethal Factor Protease, MLPCN compound set | 2010 | Current protocols in cytometry, Oct, Volume: Chapter 13 | Microsphere-based flow cytometry protease assays for use in protease activity detection and high-throughput screening. |
| AID588501 | High-throughput multiplex microsphere screening for inhibitors of toxin protease, specifically Lethal Factor Protease, MLPCN compound set | 2006 | Cytometry. Part A : the journal of the International Society for Analytical Cytology, May, Volume: 69, Issue:5 | Microsphere-based protease assays and screening application for lethal factor and factor Xa. |
| AID588501 | High-throughput multiplex microsphere screening for inhibitors of toxin protease, specifically Lethal Factor Protease, MLPCN compound set | 2010 | Assay and drug development technologies, Feb, Volume: 8, Issue:1 | High-throughput multiplex flow cytometry screening for botulinum neurotoxin type a light chain protease inhibitors. |
| AID588499 | High-throughput multiplex microsphere screening for inhibitors of toxin protease, specifically Botulinum neurotoxin light chain A protease, MLPCN compound set | 2010 | Current protocols in cytometry, Oct, Volume: Chapter 13 | Microsphere-based flow cytometry protease assays for use in protease activity detection and high-throughput screening. |
| AID588499 | High-throughput multiplex microsphere screening for inhibitors of toxin protease, specifically Botulinum neurotoxin light chain A protease, MLPCN compound set | 2006 | Cytometry. Part A : the journal of the International Society for Analytical Cytology, May, Volume: 69, Issue:5 | Microsphere-based protease assays and screening application for lethal factor and factor Xa. |
| AID588499 | High-throughput multiplex microsphere screening for inhibitors of toxin protease, specifically Botulinum neurotoxin light chain A protease, MLPCN compound set | 2010 | Assay and drug development technologies, Feb, Volume: 8, Issue:1 | High-throughput multiplex flow cytometry screening for botulinum neurotoxin type a light chain protease inhibitors. |
| AID651635 | Viability Counterscreen for Primary qHTS for Inhibitors of ATXN expression | |||
| AID504810 | Antagonists of the Thyroid Stimulating Hormone Receptor: HTS campaign | 2010 | Endocrinology, Jul, Volume: 151, Issue:7 | A small molecule inverse agonist for the human thyroid-stimulating hormone receptor. |
| AID588497 | High-throughput multiplex microsphere screening for inhibitors of toxin protease, specifically Botulinum neurotoxin light chain F protease, MLPCN compound set | 2010 | Current protocols in cytometry, Oct, Volume: Chapter 13 | Microsphere-based flow cytometry protease assays for use in protease activity detection and high-throughput screening. |
| AID588497 | High-throughput multiplex microsphere screening for inhibitors of toxin protease, specifically Botulinum neurotoxin light chain F protease, MLPCN compound set | 2006 | Cytometry. Part A : the journal of the International Society for Analytical Cytology, May, Volume: 69, Issue:5 | Microsphere-based protease assays and screening application for lethal factor and factor Xa. |
| AID588497 | High-throughput multiplex microsphere screening for inhibitors of toxin protease, specifically Botulinum neurotoxin light chain F protease, MLPCN compound set | 2010 | Assay and drug development technologies, Feb, Volume: 8, Issue:1 | High-throughput multiplex flow cytometry screening for botulinum neurotoxin type a light chain protease inhibitors. |
| AID504812 | Inverse Agonists of the Thyroid Stimulating Hormone Receptor: HTS campaign | 2010 | Endocrinology, Jul, Volume: 151, Issue:7 | A small molecule inverse agonist for the human thyroid-stimulating hormone receptor. |
| AID1794808 | Fluorescence-based screening to identify small molecule inhibitors of Plasmodium falciparum apicoplast DNA polymerase (Pf-apPOL). | 2014 | Journal of biomolecular screening, Jul, Volume: 19, Issue:6 | A High-Throughput Assay to Identify Inhibitors of the Apicoplast DNA Polymerase from Plasmodium falciparum. |
| AID1794808 | Fluorescence-based screening to identify small molecule inhibitors of Plasmodium falciparum apicoplast DNA polymerase (Pf-apPOL). | |||
| [information is prepared from bioassay data collected from National Library of Medicine (NLM), extracted Dec-2023] | ||||
| Timeframe | Studies, This Drug (%) | All Drugs % |
|---|---|---|
| pre-1990 | 3 (18.75) | 18.7374 |
| 1990's | 2 (12.50) | 18.2507 |
| 2000's | 3 (18.75) | 29.6817 |
| 2010's | 5 (31.25) | 24.3611 |
| 2020's | 3 (18.75) | 2.80 |
| [information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023] | ||
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.
| This Compound (48.97) All Compounds (24.57) |
| Publication Type | This drug (%) | All Drugs (%) |
|---|---|---|
| Trials | 0 (0.00%) | 5.53% |
| Reviews | 0 (0.00%) | 6.00% |
| Case Studies | 0 (0.00%) | 4.05% |
| Observational | 0 (0.00%) | 0.25% |
| Other | 16 (100.00%) | 84.16% |
| [information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023] | ||