3,5-dimethylthiophene-2-carboxylic acid CAS 65613-27-6

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3,5-dimethylthiophene-2-carboxylic acid.

3,5-dimethylthiophene-2-carboxylic acid (CAS 65613-27-6), molecular formula C7H12O2S and molecular weight 160.23 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C7H12O2S, 3,5-dimethylthiophene-2-carboxylic acid contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 160.23 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry.

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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

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