6-(Carboxymethyl)-4-(4-methoxybenzenesulfonyl)-3,4-dihydro-2H-1,4-benzoxazine-2-carboxylic acid CAS 866134-53-4

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 6-(Carboxymethyl)-4-(4-methoxybenzenesulfonyl)-3,4-dihydro-2H-1,4-benzoxazine-2-carboxylic acid.

6-(Carboxymethyl)-4-(4-methoxybenzenesulfonyl)-3,4-dihydro-2H-1,4-benzoxazine-2-carboxylic acid (CAS 866134-53-4), molecular formula C18H17NO8S and molecular weight 407.39 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 6-(Carboxymethyl)-4-(4-methoxybenzenesulfonyl)-3,4-dihydro-2H-1,4-benzoxazine-2-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 407.39 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.

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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