7-Nitrobenzo[b]thiophene-2-carboxylic acid CAS 90407-22-0

Description

The occurrence of 7-Nitrobenzo[b]thiophene-2-carboxylic acid is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

7-Nitrobenzo[b]thiophene-2-carboxylic acid (CAS 90407-22-0) is a high-purity analytical reference standard with the molecular formula C9H5NO4S and a molecular weight of 223.21 g/mol.

7-Nitrobenzo[b]thiophene-2-carboxylic acid (C9H5NO4S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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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