8-Amino-N-(3,5-dichlorophenyl)-3,4-dihydro-2H-1,4-ethanothieno[2,3-b][1,5]naphthyridine-7-carboxamide CAS 728888-51-5

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 8-Amino-N-(3,5-dichlorophenyl)-3,4-dihydro-2H-1,4-ethanothieno[2,3-b][1,5]naphthyridine-7-carboxamide.

8-Amino-N-(3,5-dichlorophenyl)-3,4-dihydro-2H-1,4-ethanothieno[2,3-b][1,5]naphthyridine-7-carboxamide (CAS 728888-51-5) is a high-purity analytical reference standard with the molecular formula C19H16Cl2N4OS and a molecular weight of 419.33 g/mol.

8-Amino-N-(3,5-dichlorophenyl)-3,4-dihydro-2H-1,4-ethanothieno[2,3-b][1,5]naphthyridine-7-carboxamide (C19H16Cl2N4OS) contains a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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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