Thieno[3,2-d]isothiazole-5-carboxylic acid CAS 74598-12-2

Description

Compared with other compounds in its class, the molecular weight of 185.22 g/mol gives Thieno[3,2-d]isothiazole-5-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Thieno[3,2-d]isothiazole-5-carboxylic acid (CAS 74598-12-2) is a high-purity analytical reference standard with the molecular formula C6H3NO2S2 and a molecular weight of 185.22 g/mol.

Based on its molecular formula C6H3NO2S2, Thieno[3,2-d]isothiazole-5-carboxylic acid contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 185.22 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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.

As a certified reference material (CRM), Thieno[3,2-d]isothiazole-5-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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