Ethyl 3-oxo-3H-pyrazole-5-carboxylate CAS 408334-03-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 408334-03-2 |
| Molecular Formula | C6H6N2O3 |
| Molecular Weight | 154.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 3-oxo-3H-pyrazole-5-carboxylate (CAS 408334-03-2) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C6H6N2O3. Molecular weight: 154.12 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C6H6N2O3 |
| Molecular Weight | 154.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
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