4-Ethoxy-4-oxobut-2-ynoic acid CAS 38391-86-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 38391-86-5 |
| Molecular Formula | C6H5O4 |
| Molecular Weight | 141.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Ethoxy-4-oxobut-2-ynoic acid (CAS 38391-86-5) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C6H5O4. Molecular weight: 141.10 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C6H5O4 |
| Molecular Weight | 141.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
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Recommended Standards
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- 4,6-Dimethyl-5-(tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidin-2-amine (CAS 2377611-40-8)
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- Methyl 4-hydroxy-1H-indazole-6-carboxylate (CAS 1408074-52-1)
- C-Peptide (Proinsulin) (CAS 59112-80-0)
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