Ethyl 5-amino-4-bromo-1-(4-chlorophenyl)-1H-pyrazole-3-carboxylate CAS 1427022-00-1
| CAS No. | 1427022-00-1 |
| Molecular Formula | C12H11BrClN3O2 |
| Molecular Weight | 344.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Ethyl 5-amino-4-bromo-1-(4-chlorophenyl)-1H-pyrazole-3-carboxylate.
CATO supplies Ethyl 5-amino-4-bromo-1-(4-chlorophenyl)-1H-pyrazole-3-carboxylate (CAS 1427022-00-1), a certified reference material (molecular formula C12H11BrClN3O2, MW 344.59 g/mol) for analytical method development and quality control.
Ethyl 5-amino-4-bromo-1-(4-chlorophenyl)-1H-pyrazole-3-carboxylate (C12H11BrClN3O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine/bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C12H11BrClN3O2 |
| Molecular Weight | 344.59 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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; 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.) | 1991 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 3 |
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