Methyl 5-chloro-4-[(hydroxyimino)methyl]-1-phenyl-1H-pyrazole-3-carboxylate CAS 320423-32-3
| CAS No. | 320423-32-3 |
| Molecular Formula | C12H10ClN3O3 |
| Molecular Weight | 279.68 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 Methyl 5-chloro-4-[(hydroxyimino)methyl]-1-phenyl-1H-pyrazole-3-carboxylate.
Methyl 5-chloro-4-[(hydroxyimino)methyl]-1-phenyl-1H-pyrazole-3-carboxylate (CAS 320423-32-3) is a high-purity analytical reference standard with the molecular formula C12H10ClN3O3 and a molecular weight of 279.68 g/mol.
The molecular framework of Methyl 5-chloro-4-[(hydroxyimino)methyl]-1-phenyl-1H-pyrazole-3-carboxylate (C12H10ClN3O3) 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 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures Methyl 5-chloro-4-[(hydroxyimino)methyl]-1-phenyl-1H-pyrazole-3-carboxylate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H10ClN3O3 |
| Molecular Weight | 279.68 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
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