2-Chloro-5-methyl-8-(1-methylcyclopentyl)pyrido[2,3-d]pyrimidin-7(8H)-one CAS 1956331-63-7

Description

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.

2-Chloro-5-methyl-8-(1-methylcyclopentyl)pyrido[2,3-d]pyrimidin-7(8H)-one (CAS 1956331-63-7), molecular formula C14H16ClN3O and molecular weight 277.75 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C14H16ClN3O, 2-Chloro-5-methyl-8-(1-methylcyclopentyl)pyrido[2,3-d]pyrimidin-7(8H)-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 277.75 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.

Physical & Chemical Properties

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