2-Thiophenecarboxylic acid, 5-chloro-2,3-dihydro-3-oxo-, methyl ester CAS 953092-76-7

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-Thiophenecarboxylic acid, 5-chloro-2,3-dihydro-3-oxo-, methyl ester.

2-Thiophenecarboxylic acid, 5-chloro-2,3-dihydro-3-oxo-, methyl ester (CAS 953092-76-7), molecular formula C6H5ClO3S and molecular weight 192.62 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C6H5ClO3S, 2-Thiophenecarboxylic acid, 5-chloro-2,3-dihydro-3-oxo-, methyl ester contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 192.62 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

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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