5-Methyl-3-(thiophen-3-yl)-1,2-oxazole-4-carboxylic acid CAS 943131-05-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 943131-05-3 |
| Molecular Formula | C9H7NO3S |
| Molecular Weight | 209.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Methyl-3-(thiophen-3-yl)-1,2-oxazole-4-carboxylic acid (CAS 943131-05-3), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C9H7NO3S. Molecular weight: 209.22 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C9H7NO3S |
| Molecular Weight | 209.22 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.) | 1987 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 5-Methyl-2-(thiophen-2-yl)-1,3-oxazole-4-carboxylic acid (CAS 1016526-89-8)
- 2-[2-(thiophen-2-yl)-1,3-oxazol-4-yl]acetic acid (CAS 1082414-36-5)
- 5-Methyl-3-(thiophen-2-yl)isoxazole-4-carboxylic acid (CAS 83817-53-2)
- Methyl 5-(thiophen-2-yl)oxazole-4-carboxylate (CAS 85210-60-2)
- Methyl 5-(thiophen-3-yl)isoxazole-3-carboxylate (CAS 657425-23-5)
- 1-(Thiophen-2-ylmethyl)-1h-1,2,3-triazole-4-carboxylic acid (CAS 1284940-06-2)
- 1-(Thiophen-3-ylmethyl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1456462-38-6)
- 5-(Thiophen-2-yl)isoxazole-3-carbohydrazide (CAS 90004-25-4)
Recommended Standards
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- 6-Formyl-2-methyl-4h-thieno[3,2-b]pyrrole-5-carboxylic acid (CAS 842112-66-7)
- Cyclohexyl(hexyl)sulfane (CAS 7133-26-8)
- Methyl 1-(furan-2-carbonyl)-1H-indole-3-carboxylate (CAS 401611-14-1)
- 2-(4-((Trifluoromethyl)thio)phenyl)acetaldehyde (CAS 111991-23-2)
- [1,1′-Binaphthalen]-2-amine, 2′-(diphenylphosphino)-N,N-dimethyl-, (1R)- (CAS 216368-93-3)
- 1-(4'-Methoxy-3'-sulfonamidophenyl)-1-propanone 1076198-44-1 2-Methoxy-5-(1-oxopropyl)benzenesulfonamide (CAS 1076198-44-1)
- 4-(Chloromethyl)-3-(difluoromethyl)-6-fluoropyridin-2-amine (CAS 1805063-01-7)
- Semaglutide impurity 260 (CAS CATO-C4X-2226260)
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