4-(3-methylphenyl)-1-sulfanyl-4H,5H-[1,2,4]triazolo[4,3-a]quinazolin-5-one CAS 67442-91-5

Purity 97%+In StockPharmaceutical Standards
CAS No.67442-91-5
Molecular FormulaC16H28N4OS
Molecular Weight324.48 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-(3-methylphenyl)-1-sulfanyl-4H,5H-[1,2,4]triazolo[4,3-a]quinazolin-5-one CAS 67442-91-5 chemical structure

Description

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

4-(3-methylphenyl)-1-sulfanyl-4H,5H-[1,2,4]triazolo[4,3-a]quinazolin-5-one (CAS 67442-91-5) is a high-purity analytical reference standard with the molecular formula C16H28N4OS and a molecular weight of 324.48 g/mol.

The molecular framework of 4-(3-methylphenyl)-1-sulfanyl-4H,5H-[1,2,4]triazolo[4,3-a]quinazolin-5-one (C16H28N4OS) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. 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).

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.

As a certified reference material (CRM), 4-(3-methylphenyl)-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.

Physical & Chemical Properties

Molecular FormulaC16H28N4OS
Molecular Weight324.48 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1976
Nitrogen Atoms4
Sulfur Atoms1

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