6,8-Dichloro-3-(4-nitrophenyl)-2-thioxo-2,3-dihydroquinazolin-4(1H)-one CAS 937601-65-5

Description

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.

6,8-Dichloro-3-(4-nitrophenyl)-2-thioxo-2,3-dihydroquinazolin-4(1H)-one (CAS 937601-65-5), molecular formula C14H7Cl2N3O3S and molecular weight 368.19 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 6,8-Dichloro-3-(4-nitrophenyl)-2-thioxo-2,3-dihydroquinazolin-4(1H)-one (C14H7Cl2N3O3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 368.19 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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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