Ethyl 1-(3-chlorophenyl)-4-cyano-1H-pyrazole-5-carboxylate CAS 321574-32-7
| CAS No. | 321574-32-7 |
| Molecular Formula | C13H10ClN3O2 |
| Molecular Weight | 275.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Ethyl 1-(3-chlorophenyl)-4-cyano-1H-pyrazole-5-carboxylate (CAS 321574-32-7), molecular formula C13H10ClN3O2 and molecular weight 275.69 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Ethyl 1-(3-chlorophenyl)-4-cyano-1H-pyrazole-5-carboxylate (C13H10ClN3O2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C13H10ClN3O2 |
| Molecular Weight | 275.69 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Ethyl Standards
- Ethyl 1-(2-chlorophenyl)-5-cyano-1H-pyrazole-3-carboxylate (CAS 1269291-83-9)
- 4-(4-Chlorophenyl)-3,6-dimethylisoxazolo[3,4-d]pyridazin-7(6H)-one (CAS 135126-70-4)
- Methyl 2-(2-chlorophenyl)-4H-furo[3,2-b]pyrrole-5-carboxylate (CAS 1713640-18-6)
- 2-((2-Chlorophenyl)carbamoyl)benzoic acid (CAS 6273-12-7)
- 2-(4-Chlorophenyl)-3a,4,7,7a-tetrahydro-1H-4,7-epoxyisoindole-1,3(2H)-dione (CAS 43069-79-0)
- 3-[(2-chlorophenyl)methyl]-5-methyl-3H-[1,2,3]triazolo[4,5-d]pyrimidin-7-ol (CAS 333407-55-9)
- 6-((2-Chlorophenyl)amino)-3-methyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one (CAS 81016-63-9)
- 6-((4-Chlorophenyl)amino)-3-methyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one (CAS 86831-75-6)
Recommended Standards
- Ethyl 1-(2-chlorophenyl)-5-cyano-1H-pyrazole-4-carboxylate (CAS 98476-18-7)
- Ethyl 1-(3-chlorophenyl)-5-cyano-1H-pyrazole-4-carboxylate (CAS 98476-16-5)
- 7-Chloro-8-fluoro-5-methoxy-2-(methylthio)pyrido[4,3-d]pyrimidin-4(1H)-one (CAS 2763158-77-4)
- Ethyl 1-(4-chlorophenyl)-4-cyano-1H-pyrazole-5-carboxylate (CAS 956964-67-3)
- (1H-Pyrrolo[2,3-b]pyridin-3-yl)methanamine (CAS 933691-80-6)
- Ethyl 4-chloro-3-formyl-1H-indole-2-carboxylate (CAS 43142-77-4)
- Chloro(ethynyldiphenylphosphine)gold (CAS 148696-06-4)
- 1-(5-Phenylpyridin-3-yl)-1,4-diazepane (CAS 223796-38-1)
- 2-Chloro-5-nitro-4-(2,2,2-trifluoroethoxy)pyrimidine (CAS 1699431-30-5)
- 6-(5-Methyl-2-furyl)-3-phenyl-1,5,6,7-tetrahydro-4H-indazol-4-one (CAS 1428139-41-6)
- 4-Bromo-1-methyl-1H-1,2,3-triazol-5-amine hydrochloride (CAS 2680528-55-4)
- tert-Butyl (R)-4-carbamoylthiazolidine-3-carboxylate (CAS 61434-85-3)
- N-benzyl-N-ethylaminosulfonamide (CAS 14101-77-0)
- Fibronectin Adhesion-Promoting Peptide (CAS 125720-21-0)
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