Ethyl 1-(4-bromophenyl)-5-hydroxy-1H-pyrazole-4-carboxylate CAS 1242938-32-4

Description

CATO manufactures Ethyl 1-(4-bromophenyl)-5-hydroxy-1H-pyrazole-4-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.

Ethyl 1-(4-bromophenyl)-5-hydroxy-1H-pyrazole-4-carboxylate (CAS 1242938-32-4), molecular formula C12H11BrN2O3 and molecular weight 311.13 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of Ethyl 1-(4-bromophenyl)-5-hydroxy-1H-pyrazole-4-carboxylate (C12H11BrN2O3) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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.

Physical & Chemical Properties

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