Methyl 2-amino-5-oxo-4-(pyridin-3-yl)-4H,5H-thiochromeno[4,3-b]pyran-3-carboxylate CAS 923560-01-4

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Methyl 2-amino-5-oxo-4-(pyridin-3-yl)-4H,5H-thiochromeno[4,3-b]pyran-3-carboxylate.

Methyl 2-amino-5-oxo-4-(pyridin-3-yl)-4H,5H-thiochromeno[4,3-b]pyran-3-carboxylate (CAS 923560-01-4) is a high-purity analytical reference standard with the molecular formula C19H14N2O4S and a molecular weight of 366.39 g/mol.

Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Methyl 2-amino-5-oxo-4-(pyridin-3-yl)-4H,5H-thiochromeno[4,3-b]pyran-3-carboxylate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 366.39 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).

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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