4h,5h-[1,2,4]triazolo[4,3-a]quinazolin-5-one CAS 92221-89-1

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4h,5h-[1,2,4]triazolo[4,3-a]quinazolin-5-one.

4h,5h-[1,2,4]triazolo[4,3-a]quinazolin-5-one (CAS 92221-89-1), molecular formula C9H6N4O and molecular weight 186.17 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 4h,5h-[1,2,4]triazolo[4,3-a]quinazolin-5-one (C9H6N4O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 186.17 g/mol, it falls into the medium-molecular-weight range. 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.

CATO manufactures 4h,5h-[1,2,4]triazolo[4,3-a]quinazolin-5-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Why CATO?

• ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
• 130,000+ catalog items in stock, COA supplied with every batch
• Worldwide shipping with full export documentation (HS code guidance available)
• Technical support: +86 18665070610 / Nicole.chen@cato-chem.com