4-Methyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid CAS 272437-91-9
| CAS No. | 272437-91-9 |
| Molecular Formula | C10H9NO3S |
| Molecular Weight | 223.25 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.
CATO supplies 4-Methyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid (CAS 272437-91-9), a certified reference material (molecular formula C10H9NO3S, MW 223.25 g/mol) for analytical method development and quality control.
The molecular framework of 4-Methyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid (C10H9NO3S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C10H9NO3S |
| Molecular Weight | 223.25 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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