(1,2-Oxazol-5-yl)methanesulfonyl chloride CAS 1781708-19-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1781708-19-7 |
| Molecular Formula | C4H4ClNO3S |
| Molecular Weight | 181.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(1,2-Oxazol-5-yl)methanesulfonyl chloride (CAS 1781708-19-7) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C4H4ClNO3S. Molecular weight: 181.60 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C4H4ClNO3S |
| Molecular Weight | 181.60 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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- 1-(5-Methyl-1,2-oxazol-3-yl)-3-(prop-2-yn-1-yl)urea (CAS 1197564-41-2)
- (3-Methyl-1,2-oxazol-5-yl)methanesulfonyl fluoride (CAS 1311314-46-1)
- (5-Methyl-1,2-oxazol-3-yl)methanesulfonyl fluoride (CAS 1311317-32-4)
- 2-[(5-methyl-1,2-oxazol-4-yl)formamido]acetic acid (CAS 143469-00-5)
- (2-PHENYL-1,3-OXAZOL-4-YL)ACETONITRILE (CAS 30494-98-5)
- Oxazol-5-ylmethyl methanesulfonate (CAS 916810-71-4)
Recommended Standards
- 2-Methyloxazole-4-sulfonyl chloride (CAS 1793114-90-5)
- 4-Methyloxazole-2-sulfonyl chloride (CAS 1260663-54-4)
- 2-Methyloxazole-5-sulfonyl chloride (CAS 1909316-63-7)
- 4-(4-tert-Butyl-benzyloxy)-3-ethoxy-benzaldehyde (CAS 565168-71-0)
- Des[(3-chloro-2-propenyl)oxy]-2-iminoallyl Clethodim (CAS 1346600-51-8)
- Vorapaxar Impurity 3 (CAS 618385-10-7)
- 1-((2-Chlorobenzyl)oxy)-2-(4-methoxyphenyl)-1H-imidazo[4,5-b]pyridine (CAS 339027-20-2)
- 4-(5-Trifluoromethyl-pyridin-2-yl)-benzoyl chloride (CAS 223128-27-6)
- (2-(1-(3,5-Bis(trifluoromethyl)benzyl)-5-(pyridin-4-yl)-1H-1,2,3-triazol-4-yl)pyridin-3-yl)(2-chlorophenyl)methanone (CAS 622370-35-8)
- Semaglutide impurity 40 (CAS CATO-C4X-222640)
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