5-Methylthiazole-4-carboxylic acid CAS 120237-76-5

Description

Compared with other compounds in its class, the molecular weight of 143.16 g/mol gives 5-Methylthiazole-4-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

5-Methylthiazole-4-carboxylic acid (CAS 120237-76-5), molecular formula C5H5NO2S and molecular weight 143.16 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 5-Methylthiazole-4-carboxylic acid (C5H5NO2S) is characterized by an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. 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.

As a certified reference material (CRM), 5-Methylthiazole-4-carboxylic acid 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

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