5-Methyl-3-(3-nitrophenyl)isoxazole-4-carboxylic acid CAS 38694-05-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 38694-05-2 |
| Molecular Formula | C11H8N2O5 |
| Molecular Weight | 248.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Methyl-3-(3-nitrophenyl)isoxazole-4-carboxylic acid (CAS 38694-05-2) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C11H8N2O5. Molecular weight: 248.19 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C11H8N2O5 |
| Molecular Weight | 248.19 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Nitrogen Atoms | 2 |
Related Methyl Standards
- Methyl 2-(4-Nitrophenyl)oxazole-4-carboxylate (CAS 1171126-87-6)
- 5-Methyl-1-(4-nitrophenyl)-1h-1,2,3-triazole-4-carboxylic acid (CAS 1217-99-8)
- 4-Methyl-2-(4-nitrophenyl)oxazole-5-carboxylic acid (CAS 1243440-61-0)
- Methyl 5-(2-Nitrophenyl)isoxazole-3-carboxylate (CAS 1375064-51-9)
- Methyl 5-(3-nitrophenyl)-1,3-oxazole-4-carboxylate (CAS 1820687-81-7)
- 2-(3-Methyl-4-nitrophenyl)oxazole-4-carboxylic acid (CAS 885273-86-9)
- 5-Methyl-1-(3-nitrophenyl)-1h-1,2,3-triazole-4-carboxylic acid (CAS 929975-73-5)
- 5-Methyl-3-(4-nitrophenyl)isoxazole-4-carboxylic acid (CAS 7123-64-0)
Recommended Standards
- 5-Amino-2-(4-nitrophenyl)oxazole-4-carboxamide (CAS 937600-09-4)
- 6-Methoxyquinoxaline-2,3-dicarboxylic acid (CAS 889950-50-9)
- 5,5'-Diamino-2H,2'H-[3,3'-bipyridinylidene]-2,2',6,6'(1H,1'H)-tetraone (CAS 2435-59-8)
- 3,3-Difluoro-2,2-dimethylpentane-1-sulfonyl chloride (CAS 2031260-94-1)
- 3,5-Dichloro-4-n-pentylbenzophenone (CAS 951887-77-7)
- 2-(2-Bromophenyl)-6-(pentafluoro-λ6-sulfanyl)-1H-benzo[d]imidazole (CAS 1379803-57-2)
- Ethyl 3-amino-4-(isopropylamino)benzoate (CAS 1187570-89-3)
- 1,3-Diphenylprop-2-en-1-ol (CAS 4663-33-6)
- 1,2-Dihydro-benz[a]anthracene (CAS 60968-08-3)
- Semaglutide impurity 196 (CAS CATO-C4X-2226196)
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