2-[(4-Methoxyphenyl)sulfonyl]-3-phenyl-5(2H)-isoxazolone CAS 303987-11-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 303987-11-3 |
| Molecular Formula | C16H13NO5S |
| Molecular Weight | 331.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-[(4-Methoxyphenyl)sulfonyl]-3-phenyl-5(2H)-isoxazolone (CAS 303987-11-3) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C16H13NO5S. Molecular weight: 331.34 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C16H13NO5S |
| Molecular Weight | 331.34 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methoxyphenyl Standards
- N-(2-Methoxyphenyl)-2-((4-oxo-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-6-yl)thio)acetamide (CAS 877629-89-5)
- N-(4-Methoxyphenyl)-4-(trifluoromethyl)benzenesulfonamide (CAS 903250-29-3)
- 2-(2-Methoxyphenyl)-6-(4-methoxyphenyl)pyrazolo[1,5-a]pyrimidine (CAS 893613-33-7)
- 2-(3-Methoxyphenyl)-6-(4-methoxyphenyl)pyrazolo[1,5-a]pyrimidine (CAS 893613-17-7)
- 3-{1-[(3-methoxyphenyl)methyl]-1H-1,3-benzodiazol-2-yl}-1,2-dihydropyridin-2-one (CAS 866136-22-3)
- 6-(4-Methoxyphenyl)-5-methyl-3-(pyridin-2-yl)pyrazolo[1,5-a]pyrimidin-7-amine (CAS 685109-46-0)
- N-((3-(4-methoxyphenyl)isoxazol-5-yl)methyl)-2-morpholinoacetamide (CAS 338963-42-1)
- 2-((2-((4-Methoxyphenyl)amino)-2-oxo-1-phenylethyl)thio)acetic acid (CAS 339109-08-9)
Recommended Standards
- 2,3-Dimethoxy-5-(morpholinosulfonyl)benzoic acid (CAS 327091-18-9)
- 2-Amino-N-(2-fluoro-4-methoxyphenyl)-4-oxo-1,4,5,6,7,8-hexahydrocyclohepta[b]pyrrole-3-carboxamide (CAS 380365-94-6)
- 2-(4-Fluorophenyl)-N-(5-(4-fluorophenyl)-1,3,4-thiadiazol-2-yl)acetamide (CAS 476463-39-5)
- 3-((4-Fluorophenoxy)methyl)benzaldehyde (CAS 1443304-37-7)
- [5-(4-Bromophenyl)-1-methyl-1H-pyrazol-4-yl](4,6-dichloro-5-pyrimidinyl)methanol (CAS 1424941-23-0)
- Ethyl 5-(2-(methylthio)ethyl)-1,2,4-oxadiazole-3-carboxylate (CAS 1339441-56-3)
- Ethyl 7-chloro-1-cyclopropyl-8-methyl-4-oxo-1,4-dihydroquinoline-3-carboxylate (CAS 103877-51-6)
- 2-(Aminomethyl)-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine-5-carboxaldehyde (CAS 1805296-79-0)
- 5,6-Difluorobicyclo[2.2.1]Heptan-2-One (CAS 162307-08-6)
- Semaglutide impurity 199 (CAS CATO-C4X-2226199)
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