4-Phosphonobutyric acid CAS 4378-43-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 4378-43-2 |
| Molecular Formula | C4H9O5P |
| Molecular Weight | 168.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-Phosphonobutyric acid (CAS 4378-43-2), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C4H9O5P. Molecular weight: 168.09 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C4H9O5P |
| Molecular Weight | 168.09 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 0.5 |
| CAS Registry Year (est.) | 1958 |
Related Phosphonobutyric Standards
Recommended Standards
- 3-Phosphonobutanoic acid (CAS 4422-66-6)
- Butyric phosphoric anhydride (CAS 4378-06-7)
- 3,5-Bis(difluoromethyl)-1H-pyrazole (CAS 77614-79-0)
- N-(2-methyl-4-(trifluoromethoxy)phenyl)acetamide (CAS 886762-79-4)
- 3,5-Diamino-1H-pyrazole-4-carbonitrile (CAS 6844-58-2)
- 2-Bromo-4-isopropoxy-5-methoxybenzoic acid (CAS 1142201-89-5)
- 1-(Diphenyl(3-(trifluoromethyl)phenyl)methyl)-1H-imidazole hydrochloride (CAS 200933-15-9)
- 3-Bromo-1-(4-fluorophenyl)-1H-pyrazole-5-carboxylic acid (CAS 1251249-98-5)
- 5-((tert-Butoxycarbonyl)amino)quinoline-2-carboxylic acid (CAS 1023816-89-8)
- D-Ala35-Tirzepatide (CAS CATO-CPTD788904)
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