4-Butyl-1-sulfanyl-4h,5h-[1,2,4]triazolo[4,3-a]quinazolin-5-one CAS 749920-43-2

Description

As a certified reference material (CRM), 4-Butyl-1-sulfanyl-4h,5h-[1,2,4]triazolo[4,3-a]quinazolin-5-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.

4-Butyl-1-sulfanyl-4h,5h-[1,2,4]triazolo[4,3-a]quinazolin-5-one (CAS 749920-43-2), molecular formula C13H14N4OS and molecular weight 274.34 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, 4-Butyl-1-sulfanyl-4h,5h-[1,2,4]triazolo[4,3-a]quinazolin-5-one is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 274.34 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).

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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