(Z)-3-Chloro-2-formyl-but-2-enoic acid ethyl ester CAS 31357-78-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 31357-78-5 |
| Molecular Formula | C7H9ClO3 |
| Molecular Weight | 176.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(Z)-3-Chloro-2-formyl-but-2-enoic acid ethyl ester (CAS 31357-78-5) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C7H9ClO3. Molecular weight: 176.60 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C7H9ClO3 |
| Molecular Weight | 176.60 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Cl-containing |
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Recommended Standards
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- 5-Chloro-1H-indole-3-carbonitrile (CAS 194490-14-7)
- Ethyl 3,4-dichlorobenzoate (CAS 28394-58-3)
- Ethyl 1,3-dimethyl-4-oxo-5-phenyl-4,5-dihydro-1H-pyrrolo[2,3-d]pyridazine-2-carboxylate (CAS 150582-31-3)
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- Peptide Impurity 13 (CAS CATO-CPTD788813)
- 3-Phenylpyrazine-2-carbonitrile (CAS 2882-16-8)
- Ethyl 1-(1-benzhydrylazetidin-3-yl)piperidine-4-carboxylate (CAS 178311-90-5)
- Serpent Peptide (CAS 823202-99-9)
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