Determine the necessary mass, volume, or concentration for preparing a solution.
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Moligand™, ≥99% Moligand™ for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Store at 2-8°C Ships Wet ice Check lot-specific COA for exact specifications.
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Cited in 1 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Tolcapone is a selective, potent and reversible of catechol-O-methyl transferase (COMT) inhibitor with Ki of 30 nM.
An inhibitor of peripheral and central catechol-O-methyltransferase.
| ALogP | 3.3 |
|---|
| Pubchem Sid | 488194951 |
|---|---|
| Pubchem Sid Url | https://pubchem.ncbi.nlm.nih.gov/substance/488194951 |
| Canonical Smiles | CC1=CC=C(C=C1)C(=O)C2=CC(=C(C(=C2)O)O)[N+](=O)[O-] |
| IUPAC Name | (3,4-dihydroxy-5-nitrophenyl)-(4-methylphenyl)methanone |
| InChIKey | MIQPIUSUKVNLNT-UHFFFAOYSA-N |
| INCHI | 1S/C14H11NO5/c1-8-2-4-9(5-3-8)13(17)10-6-11(15(19)20)14(18)12(16)7-10/h2-7,16,18H,1H3 |
| Isomeric SMILES | CC1=CC=C(C=C1)C(=O)C2=CC(=C(C(=C2)O)O)[N+](=O)[O-] |
| RTECS | PC4952500 |
| PubChem CID | 4659569 |
| Molecular Weight | 273.24 |
Comprehensive hazard, handling, storage, and regulatory compliance document.
Download SDS →Lot-specific quality data. Enter your lot number to retrieve the exact COA.
Look up COA →Full quality attributes and acceptance criteria for this grade.
View spec sheet →Taxonomy Tree
| Kingdom | Organic compounds |
|---|---|
| Superclass | Benzenoids |
| Class | Benzene and substituted derivatives |
| Subclass | Benzophenones |
| Intermediate Tree Nodes | Not available |
| Direct Parent | Benzophenones |
| Alternative Parents | Aryl-phenylketones Diphenylmethanes Nitrophenols Nitrobenzenes Benzoyl derivatives Catechols Nitroaromatic compounds Toluenes 1-hydroxy-4-unsubstituted benzenoids 1-hydroxy-2-unsubstituted benzenoids Propargyl-type 1,3-dipolar organic compounds Organic oxoazanium compounds Organopnictogen compounds Hydrocarbon derivatives Organonitrogen compounds Organic oxides |
| Molecular Framework | Aromatic homomonocyclic compounds |
| Substituents | Benzophenone - Diphenylmethane - Aryl-phenylketone - Nitrophenol - Nitrobenzene - Nitroaromatic compound - Benzoyl - Catechol - Aryl ketone - 1-hydroxy-4-unsubstituted benzenoid - 1-hydroxy-2-unsubstituted benzenoid - Toluene - Phenol - Ketone - Organic nitro compound - C-nitro compound - Organic 1,3-dipolar compound - Propargyl-type 1,3-dipolar organic compound - Allyl-type 1,3-dipolar organic compound - Organic oxoazanium - Organic nitrogen compound - Hydrocarbon derivative - Organic oxide - Organic oxygen compound - Organopnictogen compound - Organonitrogen compound - Organooxygen compound - Aromatic homomonocyclic compound |
| Description | This compound belongs to the class of organic compounds known as benzophenones. These are organic compounds containing a ketone attached to two phenyl groups. |
| External Descriptors | a small molecule |
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Find and download the COA for your product by matching the lot number on the packaging.
| Lot Number | Certificate Type | Date | Item |
|---|---|---|---|
| Certificate of Analysis | Feb 05, 2026 | T125285 | |
| Certificate of Analysis | Mar 04, 2025 | T125285 | |
| Certificate of Analysis | Mar 04, 2025 | T125285 | |
| Certificate of Analysis | Mar 04, 2025 | T125285 | |
| Certificate of Analysis | Mar 04, 2025 | T125285 | |
| Certificate of Analysis | Mar 04, 2025 | T125285 | |
| Certificate of Analysis | Mar 04, 2025 | T125285 | |
| Certificate of Analysis | Mar 04, 2025 | T125285 | |
| Certificate of Analysis | Oct 22, 2024 | T125285 |
| Solubility | Soluble in water (partly), DMSO (55 mg/ml at 25 °C), and water (55 mg/ml at 25 °C). |
|---|---|
| Sensitivity | Heat Sensitive |
| Melt Point(°C) | 145 °C |
| Molecular Weight | 273.240 g/mol |
| XLogP3 | 3.300 |
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 5 |
| Rotatable Bond Count | 2 |
| Exact Mass | 273.064 Da |
| Monoisotopic Mass | 273.064 Da |
| Topological Polar Surface Area | 103.000 Ų |
| Heavy Atom Count | 20 |
| Formal Charge | 0 |
| Complexity | 372.000 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| The total count of all stereochemical bonds | 0 |
| Covalently-Bonded Unit Count | 1 |
| 1. Xia Lv, Xin-Xin Wang, Jie Hou, Zhong-Ze Fang, Jing-Jing Wu, Yun-Feng Cao, Shu-Wen Liu, Guang-Bo Ge, Ling Yang. (2016) Comparison of the inhibitory effects of tolcapone and entacapone against human UDP-glucuronosyltransferases. TOXICOLOGY AND APPLIED PHARMACOLOGY, [PMID:27089846] [10.1016/j.taap.2016.04.009] |
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