Ethyl 3-chloro-2-oxo-2H-pyran-5-carboxylate CAS 126703-76-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 126703-76-2 |
| Molecular Formula | C8H7ClO4 |
| Molecular Weight | 202.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 3-chloro-2-oxo-2H-pyran-5-carboxylate (CAS 126703-76-2) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C8H7ClO4. Molecular weight: 202.59 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C8H7ClO4 |
| Molecular Weight | 202.59 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Cl-containing |
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Recommended Standards
- 2-(Chloromethyl)-5-(trifluoromethyl)-1,3,4-thiadiazole (CAS 1260672-42-1)
- Methyl 5-(2-chloroacetyl)furan-3-carboxylate (CAS 1258649-64-7)
- 4-(2-Chloroacetyl)-5-methylfuran-2-carboxylic acid (CAS 1311317-83-5)
- (2R,3S,4S,5R)-2-(2,6-Dichloro-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol (CAS 1701422-87-8)
- 4,6-dichloro-5-methyl-2-(pyridin-2-yl)pyrimidine (CAS 10198-77-3)
- 2-(2-Methylpyrrolidin-1-yl)acetic acid (CAS 1183514-67-1)
- 1-(1-Aminopropan-2-yl)-2-methylcyclohexan-1-ol (CAS 1559614-59-3)
- 3-(Piperidin-4-ylamino)tetrahydrothiophene 1,1-dioxide (CAS 1156601-31-8)
- 1-((3-Fluorobenzyl)amino)-2-methylpropan-2-ol (CAS 1179941-00-4)
- Semaglutide Impurity 9 (CAS CATO-C4X-22269)
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