8-Amino-N-phenyl-3,4-dihydro-2H-1,4-ethanothieno[2,3-b][1,5]naphthyridine-7-carboxamide CAS 625376-26-3

Description

The molecular framework of 8-Amino-N-phenyl-3,4-dihydro-2H-1,4-ethanothieno[2,3-b][1,5]naphthyridine-7-carboxamide (C19H18N4OS) is characterized by a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

8-Amino-N-phenyl-3,4-dihydro-2H-1,4-ethanothieno[2,3-b][1,5]naphthyridine-7-carboxamide (CAS 625376-26-3), molecular formula C19H18N4OS and molecular weight 350.44 g/mol, is a CATO reference standard with documented purity and traceability.

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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