4-Chloro-5-methylisoxazol-3(2H)-one CAS 31554-94-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 31554-94-6 |
| Molecular Formula | C4H4ClNO2 |
| Molecular Weight | 133.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
High-purity 4-Chloro-5-methylisoxazol-3(2H)-one (CAS 31554-94-6) pharmaceutical standards reference standard. Molecular formula: C4H4ClNO2. Molecular weight: 133.53 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C4H4ClNO2 |
| Molecular Weight | 133.53 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
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- 5-Chloro-2-methyl-1,2-dihydro-3H-1,2,4-triazol-3-one (CAS 22354-86-5)
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Recommended Standards
- (2-Chlorooxazol-4-yl)methanol (CAS 706789-06-2)
- 5-(Chloromethyl)isoxazol-3(2H)-one (CAS 2682-41-9)
- 4-Chloroaniline-<SUP>13</SUP>C<SUB>6</SUB> (CAS 1313734-69-8)
- 2-((1-((Benzyloxy)carbonyl)piperidin-3-yl)(cyclopropyl)amino)acetic acid (CAS 1353960-68-5)
- 2,2-Dimethyl-1,3-dichloropropane (CAS 29559-55-5)
- 2-Chloro-3-cyclopropylpyrazine (CAS 136819-11-9)
- 4-Chloro-1-trityl-1H-pyrrolo[2,3-b]pyridine (CAS 2438941-56-9)
- 5-(4-(2-Methoxyethoxy)phenyl)oxazole-2-carboxylic acid (CAS 1352496-59-3)
- 3-(4-Isobutylphenyl)-1-(2-methoxyphenyl)-1H-pyrazole-5-carboxylic acid (CAS 618382-75-5)
- Semaglutide impurity 250 (CAS CATO-C4X-2226250)
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 13829788188 / jacky.chen@cato-chem.com