2,3-Dihydrobenzo[b][1,4]oxathiine-2-carboxylic acid 4,4-dioxide CAS 1251923-88-2
| CAS No. | 1251923-88-2 |
| Molecular Formula | C9H8O5S |
| Molecular Weight | 228.22 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.
2,3-Dihydrobenzo[b][1,4]oxathiine-2-carboxylic acid 4,4-dioxide (CAS 1251923-88-2), molecular formula C9H8O5S and molecular weight 228.22 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2,3-Dihydrobenzo[b][1,4]oxathiine-2-carboxylic acid 4,4-dioxide (C9H8O5S) 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 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 228.22 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C9H8O5S |
| Molecular Weight | 228.22 g/mol |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Sulfur Atoms | 1 |
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