3-Oxo-2H,3H,4H-pyrido[3,2-b][1,4]oxazine-7-sulfonyl chloride CAS 1116135-67-1
| CAS No. | 1116135-67-1 |
| Molecular Formula | C7H5ClN2O4S |
| Molecular Weight | 248.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C7H5ClN2O4S, 3-Oxo-2H,3H,4H-pyrido[3,2-b][1,4]oxazine-7-sulfonyl chloride contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 248.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
3-Oxo-2H,3H,4H-pyrido[3,2-b][1,4]oxazine-7-sulfonyl chloride (CAS 1116135-67-1), molecular formula C7H5ClN2O4S and molecular weight 248.64 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C7H5ClN2O4S |
| Molecular Weight | 248.64 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Recommended Standards
- 6-Chloro-3-(3-fluorophenyl)[1,2,4]triazolo[4,3-b]pyridazine (CAS 1094425-19-0)
- 3-Chloro-6-(4-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazine (CAS 1116743-29-3)
- 6-Chloro-3-(2-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazine (CAS 1094354-48-9)
- (2Z)-2-Amino-3-[(E)-[(2-chloro-6-fluorophenyl)methylidene]amino]but-2-enedinitrile (CAS 117691-67-5)
- 1,5,6,7-Tetrahydrocyclopenta[b]pyrazolo[4,3-e]pyridin-3-amine (CAS 1193390-39-4)
- 2,2,2-Trifluoro-1-(1-propyl-1H-pyrrol-3-yl)ethanone (CAS 74889-32-0)
- 4,6-Dimethyl-2-(tetrahydro-2H-pyran-4-yl)-5-pyrimidinecarboxylic acid (CAS 1493143-91-1)
- Gadobutrol Impurity 186 (CAS CATO-C4X-2120186)
- 2-Amino-1-(3-(isopropyl(methyl)amino)piperidin-1-yl)ethanone (CAS 1353975-14-0)
- 2-(4-Aminophenyl)tetrahydro-1H-pyrrolo[1,2-c]imidazole-1,3(2H)-dione (CAS 1284540-54-0)
- 3-(3-Chloropropyl)-2-fluoro-4-iodopyridine (CAS 945600-05-5)
- 7-Methylimidazo[1,2-b][1,2,4]triazine (CAS 425378-62-7)
- C8-Sphingosine (CAS 133094-50-5)
- D-γ-Glu20-Side-Tirzepatide (CAS CATO-CPTD788929)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com