4-(Ethoxycarbonyl)-1-methyl-1h-pyrazole-3-carboxylic acid CAS 21272-38-8

Description

The occurrence of 4-(Ethoxycarbonyl)-1-methyl-1h-pyrazole-3-carboxylic acid is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

4-(Ethoxycarbonyl)-1-methyl-1h-pyrazole-3-carboxylic acid (CAS 21272-38-8), molecular formula C8H10N2O4 and molecular weight 198.18 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 4-(Ethoxycarbonyl)-1-methyl-1h-pyrazole-3-carboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 198.18 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.

CATO manufactures 4-(Ethoxycarbonyl)-1-methyl-1h-pyrazole-3-carboxylic acid 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

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