3-[4-(butan-2-yl)phenyl]-7-chloro-2-sulfanyl-3,4-dihydroquinazolin-4-one CAS 556009-85-9

Description

As a certified reference material (CRM), 3-[4-(butan-2-yl)phenyl]-7-chloro-2-sulfanyl-3,4-dihydroquinazolin-4-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

3-[4-(butan-2-yl)phenyl]-7-chloro-2-sulfanyl-3,4-dihydroquinazolin-4-one (CAS 556009-85-9), molecular formula C18H17ClN2OS and molecular weight 344.86 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C18H17ClN2OS, 3-[4-(butan-2-yl)phenyl]-7-chloro-2-sulfanyl-3,4-dihydroquinazolin-4-one contains a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 344.86 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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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