7-Hydroxy-4,5-dimethyl-2H-chromen-2-one CAS 51786-56-2
| CAS No. | 51786-56-2 |
| Molecular Formula | C11H10O3 |
| Molecular Weight | 190.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
7-Hydroxy-4,5-dimethyl-2H-chromen-2-one (CAS 51786-56-2), molecular formula C11H10O3 and molecular weight 190.20 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 7-Hydroxy-4,5-dimethyl-2H-chromen-2-one (C11H10O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 190.20 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 7-Hydroxy-4,5-dimethyl-2H-chromen-2-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C11H10O3 |
| Molecular Weight | 190.20 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
Related Hydroxy Standards
- 2-(4-Hydroxy-1H-indol-3-yl)acetamide (CAS 103404-85-9)
- (Z)-3-((hydroxy(methyl)amino)methylene)indolin-2-one (CAS 1164473-20-4)
- 4-Hydroxy-3,6-dimethyl-2h-chromen-2-one (CAS 118157-94-1)
- 6-Hydroxy-3,4-dihydronaphthalene-2-carboxylic acid (CAS 119034-95-6)
- 1-Hydroxy-1,4-dihydronaphthalene-2-carboxylic acid (CAS 1222438-20-1)
- 2-Ethyl-7-hydroxy-4H-chromen-4-one (CAS 137215-31-7)
- 1-(5-Hydroxy-1H-benzo[d]imidazol-4-yl)propan-1-one (CAS 137538-56-8)
- (2-Hydroxy-phenyl)-propynoic acid ethyl ester (CAS 160559-13-7)
Recommended Standards
- 7H-Spiro[furo[3,4-b]pyridine-5,3'-pyrrolidin]-7-one (CAS 869969-57-3)
- 7-Hydroxy-4,8-dimethyl-2H-chromen-2-one (CAS 4115-76-8)
- 7-Azaindole-3-propanoic Acid (CAS 27663-72-5)
- 7-Methoxy-1-methyl-1H-indazole-5-carbaldehyde (CAS 831222-99-2)
- Methyl 4-(6-bromopyrazolo[1,5-a]pyrimidin-3-yl)thiophene-2-carboxylate (CAS 1990492-94-8)
- 3-(3-Cyano-4-methylphenyl)-1-cyclohexylthiourea (CAS 297149-97-4)
- 1-bromo-5-chloro-naphthalene (CAS 77332-65-1)
- N,N-dimethyl-3-(1H-pyrazol-3-yl)benzenesulfonamide (CAS 1019012-63-5)
- Methyl 2-(2-benzamidoacetamido)acetate (CAS 51514-00-2)
- 3-(3-Fluoro-2-methylphenyl)-5-nitrobenzoic acid (CAS 1261962-57-5)
- Anastrozole Impurity 8 (CAS CATO-C4X-12398)
- 3-Methyl-4-(p-tolyl)-4,5-dihydroisoxazole-4-carboxylic acid (CAS 873000-73-8)
- (2R,3R,4S,5S,6R)-2-(1H-Benzo[d][1,2,3]triazol-1-yl)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (CAS 4706-40-5)
- Semaglutide Impurity 191 (CAS CATO-C4X-2226191)
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