(6S)-5,6-Dihydro-6-methyl-4H-thieno-[2,3-b]thiopyran-4-one 7,7-dioxide CAS 148719-91-9
| CAS No. | 148719-91-9 |
| Molecular Formula | C8H8O3S2 |
| Molecular Weight | 216.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(6S)-5,6-Dihydro-6-methyl-4H-thieno-[2,3-b]thiopyran-4-one 7,7-dioxide (CAS 148719-91-9), molecular formula C8H8O3S2 and molecular weight 216.28 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (6S)-5,6-Dihydro-6-methyl-4H-thieno-[2,3-b]thiopyran-4-one 7,7-dioxide (C8H8O3S2) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 216.28 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H8O3S2 |
| Molecular Weight | 216.28 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Sulfur Atoms | 2 |
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- 6-Hydroxy-2-(2-oxo-2-phenylethylidene)indolin-3-one (CAS 922174-79-6)
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- Clindamycin Palmitate Impurity 104 (CAS CATO-C4X-1341104)
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