6-Ethyl-4-hydroxy-2h-chromen-2-one CAS 55005-28-2
| CAS No. | 55005-28-2 |
| Molecular Formula | C11H10O3 |
| Molecular Weight | 190.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 6-Ethyl-4-hydroxy-2h-chromen-2-one.
6-Ethyl-4-hydroxy-2h-chromen-2-one (CAS 55005-28-2), molecular formula C11H10O3 and molecular weight 190.20 g/mol, is a CATO reference standard with documented purity and traceability.
6-Ethyl-4-hydroxy-2h-chromen-2-one (C11H10O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
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.) | 1972 |
Related Ethyl 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)
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Recommended Standards
- 6-Ethoxyquinoxalin-5-ol (CAS 745048-89-9)
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- 6-fluoro-1H-thieno[2,3-d]pyrimidine-2,4-dione (CAS 2659313-19-4)
- Ethyl 2-(hydroxyamino)-4-oxo-1,4-dihydropyrimidine-5-carboxylate (CAS 660850-30-6)
- 1-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-4-methylpiperazine (CAS 675844-41-4)
- (T-4)-[2-[(Hydroxy-O)methyl]-2-methyl-1,3-propanediolato(3-)-O1,O3](3-methylphenyl)-Borate potassium (CAS 1196711-02-0)
- Bis(2-isopropyl-5-methylcyclohexyl) ((2-fluorophenyl)(hydroxy)methyl)phosphonate (CAS 382149-58-8)
- 5-(Dibromomethyl)-2-phenylbenzo[d]oxazole (CAS 1706445-58-0)
- Flurbiprofen Impurity 133 (CAS CATO-C4X-1444133)
- Aliskiren (CAS 173334-57-1)
- (4-Aminophenyl)(4-ethylpiperazin-1-yl)methanone (CAS 21312-41-4)
- 6-(Benzo[c][1,2,5]thiadiazole-4-sulfonamido)hexanoic acid (CAS 313223-80-2)
- Eledoisin Related Peptide (CAS 2990-43-4)
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