4-Chloro-5-methyl-5H-pyrimido[4,5-b][1,4]thiazin-6(7H)-one CAS 20015-72-9

Description

Compared with other compounds in its class, the molecular weight of 215.66 g/mol gives 4-Chloro-5-methyl-5H-pyrimido[4,5-b][1,4]thiazin-6(7H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

4-Chloro-5-methyl-5H-pyrimido[4,5-b][1,4]thiazin-6(7H)-one (CAS 20015-72-9) is a high-purity analytical reference standard with the molecular formula C7H6ClN3OS and a molecular weight of 215.66 g/mol.

The molecular framework of 4-Chloro-5-methyl-5H-pyrimido[4,5-b][1,4]thiazin-6(7H)-one (C7H6ClN3OS) is characterized by an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. 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.

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.

CATO manufactures 4-Chloro-5-methyl-5H-pyrimido[4,5-b][1,4]thiazin-6(7H)-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

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