Ethyl 2-(6-chloro-2-methyl-4-oxoquinazolin-3(4H)-yl)acetate CAS 40889-45-0

Description

Compared with other compounds in its class, the molecular weight of 280.71 g/mol gives Ethyl 2-(6-chloro-2-methyl-4-oxoquinazolin-3(4H)-yl)acetate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Ethyl 2-(6-chloro-2-methyl-4-oxoquinazolin-3(4H)-yl)acetate (CAS 40889-45-0), molecular formula C13H13ClN2O3 and molecular weight 280.71 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of Ethyl 2-(6-chloro-2-methyl-4-oxoquinazolin-3(4H)-yl)acetate (C13H13ClN2O3) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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. 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).

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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