Ethyl 5-amino-1-(3-chlorophenyl)-1H-pyrazole-3-carboxylate CAS 1264047-21-3
| CAS No. | 1264047-21-3 |
| Molecular Formula | C12H12ClN3O2 |
| Molecular Weight | 265.70 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 265.70 g/mol gives Ethyl 5-amino-1-(3-chlorophenyl)-1H-pyrazole-3-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Ethyl 5-amino-1-(3-chlorophenyl)-1H-pyrazole-3-carboxylate (CAS 1264047-21-3), a certified reference material (molecular formula C12H12ClN3O2, MW 265.70 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Ethyl 5-amino-1-(3-chlorophenyl)-1H-pyrazole-3-carboxylate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 265.70 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), Ethyl 5-amino-1-(3-chlorophenyl)-1H-pyrazole-3-carboxylate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C12H12ClN3O2 |
| Molecular Weight | 265.70 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.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Ethyl Standards
- Ethyl 5-amino-1-(4-chlorophenyl)-1H-pyrazole-3-carboxylate (CAS 1015765-44-2)
- ethyl 5-amino-3-(4-chlorophenyl)-1H-pyrazole-1-carboxylate (CAS 1020709-18-5)
- Ethyl 5-Amino-1-(3-chlorophenyl)-1H-imidazole-4-carboxylate (CAS 1159979-56-2)
- Methyl 5-amino-1-(3-chloro-4-methylphenyl)-1H-pyrazole-4-carboxylate (CAS 1264049-59-3)
- Methyl 5-amino-1-(3-chloro-2-methylphenyl)-1H-pyrazole-4-carboxylate (CAS 1416345-79-3)
- Methyl 5-amino-1-(5-chloro-2-methylphenyl)-1H-pyrazole-4-carboxylate (CAS 1416347-95-9)
- Ethyl 5-amino-4-chloro-1-phenyl-1H-pyrazole-3-carboxylate (CAS 1427012-28-9)
- Ethyl 5-amino-1-(2-chlorophenyl)-1H-pyrazole-4-carboxylate (CAS 14678-86-5)
Recommended Standards
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