3-Cyano-5-isoxazolecarboxylic acid CAS 251912-76-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 251912-76-2 |
| Molecular Formula | C5H2N2O3 |
| Molecular Weight | 138.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Cyano-5-isoxazolecarboxylic acid (CAS 251912-76-2) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C5H2N2O3. Molecular weight: 138.08 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C5H2N2O3 |
| Molecular Weight | 138.08 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 3,5-dioxo-2H-1,2,4-triazine-6-carbonitrile (CAS 88796-54-7)
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- [1,2,5]Oxadiazolo[3,4-d]pyrimidin-7(3H)-one (CAS 17376-66-8)
- 4-Hydroxy-1-(2-methoxyethyl)-6-methylpyridin-2(1H)-one (CAS 690642-41-2)
- CM037 (CAS 896795-60-1)
- 6-Methyl-3-(piperazin-1-yl)-5,6,7,8-tetrahydrocinnoline (CAS 1710292-81-1)
- Tert-butyl 3-((dimethylamino)methyl)-1H-pyrrolo[2,3-b]pyridine-1-carboxylate (CAS 144657-65-8)
- 3-Bromo-2-hydroxybenzonitrile (CAS 13073-28-4)
- Methyl 3-{[7-(3-fluorophenyl)-4-oxo-3H,4H-thieno[3,2-d]pyrimidin-3-yl]methyl}-4-methoxybenzoate (CAS 1105232-77-6)
- Semaglutide Impurity 157 (x TFA Salt) (CAS CATO-C4X-2226157)
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