6-chloro-5,7-dimethyl-3,4-dihydro-2H-1-benzopyran-4-one CAS 15773-93-0
| CAS No. | 15773-93-0 |
| Molecular Formula | C11H11ClO2 |
| Molecular Weight | 210.66 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.
6-chloro-5,7-dimethyl-3,4-dihydro-2H-1-benzopyran-4-one (CAS 15773-93-0) is a high-purity analytical reference standard with the molecular formula C11H11ClO2 and a molecular weight of 210.66 g/mol.
Based on its molecular formula C11H11ClO2, 6-chloro-5,7-dimethyl-3,4-dihydro-2H-1-benzopyran-4-one contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 210.66 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C11H11ClO2 |
| Molecular Weight | 210.66 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Cl-containing |
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Recommended Standards
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- 4-Amino-2-methylbenzofuran-5-ol (CAS 65874-36-4)
- Methyl 2,4,6-trimethoxybenzoate (CAS 29723-28-2)
- 2-(2-bromoethoxy)propanenitrile (CAS 854679-28-0)
- Dopamine Impurity 114 (CAS CATO-C4X-1908114)
- 2-Amino-5-chlorothiophene-3-carbonitrile (CAS 338740-31-1)
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