Ethyl 3-styryl-1H-pyrazole-5-carboxylate CAS 40753-30-8
| CAS No. | 40753-30-8 |
| Molecular Formula | C14H14N2O2 |
| Molecular Weight | 242.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 242.27 g/mol gives Ethyl 3-styryl-1H-pyrazole-5-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Ethyl 3-styryl-1H-pyrazole-5-carboxylate (CAS 40753-30-8) is a high-purity analytical reference standard with the molecular formula C14H14N2O2 and a molecular weight of 242.27 g/mol.
Ethyl 3-styryl-1H-pyrazole-5-carboxylate (C14H14N2O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C14H14N2O2 |
| Molecular Weight | 242.27 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Nitrogen Atoms | 2 |
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- (1r)-1-(2-Bromo-4-fluorophenyl)ethan-1-ol (CAS 704909-66-0)
- 2-Iodo-4,6-dimethoxybenzaldehyde (CAS 16147-09-4)
- Methyltriphenylarsonium Iodide (CAS 1499-33-8)
- 7-(1-Ethyl-1h-pyrazol-5-yl)pyrazolo[1,5-a]pyrimidine-3-carbonitrile (CAS 1002651-53-7)
- Fosfomycin Impurity 25 (CAS CATO-C4X-131625)
- 3-Cyclohexyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylic acid (CAS 37804-35-6)
- Tirzepatide Impurity 19 X TFA Salt (CAS CATO-C4X-324019)
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