3-Oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid 1,1-dioxide CAS 656819-53-3
| CAS No. | 656819-53-3 |
| Molecular Formula | C9H7NO5S |
| Molecular Weight | 241.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 3-Oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid 1,1-dioxide (C9H7NO5S) 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 the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
3-Oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid 1,1-dioxide (CAS 656819-53-3) is a high-purity analytical reference standard with the molecular formula C9H7NO5S and a molecular weight of 241.22 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 3-Oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid 1,1-dioxide under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H7NO5S |
| Molecular Weight | 241.22 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Oxo Standards
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Recommended Standards
- 3-Fluoro-4-(4-formylphenoxy)benzonitrile (CAS 676494-55-6)
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- 3-(4-Fluorophenyl)-2,1-benzoxazole-5-carbaldehyde (CAS 439095-19-9)
- 4-(4-Fluoro-5-methyl-2-nitrophenyl)butanoic acid (CAS 210346-38-6)
- 2-Thiaspiro[3.3]heptane-6-carboxylic acid (CAS 1520648-96-7)
- 1-{[2-(2H-1,3-Benzodioxol-5-yl)imidazo[1,2-a]pyrimidin-3-yl]methyl}piperidine-3-carboxylic acid (CAS 904816-50-8)
- 5-Ethoxy-2-phenyloxazole-4-carbothioamide (CAS 128242-93-3)
- 3-Amino-3-methylpiperidine-2,6-dione (CAS 202271-85-0)
- Ethyl 2-(4-oxo-3,4-dihydro-2H-1,3-benzothiazin-2-ylidene)acetate (CAS 67431-59-8)
- 2-(4-(tert-Butoxycarbonyl)-3-phenylpiperazin-1-yl)acetic acid (CAS 1060813-70-8)
- 2-Chloro-5-(chloromethyl)-4-methyloxazole (CAS 1260666-99-6)
- 6-(Methylamino)-3,4-dihydronaphthalen-1(2H)-one (CAS 31435-76-4)
- 4,5-Diamino-2-methylbenzoic acid (CAS 86139-87-9)
- Influenza PR8 Hemagglutinin Peptide (110-119) (H-6312.0005) (CAS 132031-50-6)
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