6-Chloro-3-methyl-3,4-dihydro-2h-1-benzothiopyran-4-one CAS 199783-62-5
| CAS No. | 199783-62-5 |
| Molecular Formula | C10H9ClOS |
| Molecular Weight | 212.70 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
6-Chloro-3-methyl-3,4-dihydro-2h-1-benzothiopyran-4-one (CAS 199783-62-5), molecular formula C10H9ClOS and molecular weight 212.70 g/mol, is a CATO reference standard with documented purity and traceability.
6-Chloro-3-methyl-3,4-dihydro-2h-1-benzothiopyran-4-one (C10H9ClOS) contains sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; 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.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C10H9ClOS |
| Molecular Weight | 212.70 g/mol |
| 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 |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2014 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
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