Ethyl 1-(4-chlorophenyl)-5-methyl-1H-pyrazole-3-carboxylate CAS 126067-52-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 126067-52-5 |
| Molecular Formula | C13H13ClN2O2 |
| Molecular Weight | 264.71 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 1-(4-chlorophenyl)-5-methyl-1H-pyrazole-3-carboxylate (CAS 126067-52-5) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C13H13ClN2O2. Molecular weight: 264.71 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C13H13ClN2O2 |
| Molecular Weight | 264.71 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Ethyl Standards
- 1-(2-Chlorophenyl)-5-(propan-2-yl)-1h-pyrazole-4-carboxylic acid (CAS 1002249-52-6)
- 1-(3-chlorophenyl)-5-isopropyl-1H-pyrazole-4-carboxylic acid (CAS 1004043-11-1)
- 3-(2-Chlorophenyl)-N-(5-methylisoxazol-3-yl)propanamide (CAS 1023480-58-1)
- 2-(4-chlorophenyl)-5-(propan-2-yl)-1H-imidazole-4-carboxylic acid (CAS 1156076-19-5)
- 1-[(4-chlorophenyl)methyl]-3,5-dimethyl-1h-pyrazole-4-carboxylic acid (CAS 1156433-10-1)
- Ethyl 2-(4-(4-Chlorophenyl)-1H-pyrazol-1-yl)acetate (CAS 1199773-60-8)
- 2-(3-Chlorophenyl)-5-(2-hydroxyethyl)-6-methylpyrimidin-4-ol (CAS 1239781-15-7)
- n-(1-(2-Chlorophenyl)propan-2-yl)-1h-1,2,3-triazole-4-carboxamide (CAS 1355499-86-3)
Recommended Standards
- 5-Chloro-N3-(4-methoxybenzyl)pyridazine-3,4-diamine (CAS 1245648-29-6)
- 1-(3-Chloro-4-cyanophenyl)piperidine-3-carboxylic acid (CAS 1260779-69-8)
- Ethyl 5-chloro-1-(p-tolyl)-1H-pyrazole-4-carboxylate (CAS 1245258-69-8)
- 2-(6-(4-Methylpiperazin-1-yl)pyridin-3-yl)piperidine-1-carbaldehyde (CAS 1352499-33-2)
- 3-Bromo-N-cyclopentyl-5-fluorobenzamide (CAS 1329399-10-1)
- Ethyl (S)-2-acetoxy-3-(2-hydroxyphenyl)propanoate (CAS 1799611-06-5)
- 2-Morpholino-3H-pyrrolo[2,3-d]pyrimidin-4(7H)-one (CAS 1227958-71-5)
- 4-Aminobenzoic acid 2-(1-methylpropylidene)hydrazide (CAS 119821-27-1)
- 1-Bromo-3-fluoro-2-(3-fluorophenyl)benzene (CAS 1233367-30-0)
- Insulin Degludec Impurity 9 (CAS CATO-C4X-21579)
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