Methyl 4-chloro-4-oxobut-2-enoate CAS 78140-66-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 78140-66-6 |
| Molecular Formula | C5H5ClO3 |
| Molecular Weight | 148.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methyl 4-chloro-4-oxobut-2-enoate (CAS 78140-66-6) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C5H5ClO3. Molecular weight: 148.54 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C5H5ClO3 |
| Molecular Weight | 148.54 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.) | 1979 |
| Halogen Content | Cl-containing |
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