2-((4-Bromophenyl)sulfonyl)-4-butyl-5-phenyl-2,4-dihydro-3H-1,2,4-triazol-3-one CAS 329701-66-8

Purity 97%+In StockPharmaceutical Standards
CAS No.329701-66-8
Molecular FormulaC18H18BrN3O3S
Molecular Weight436.32 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-((4-Bromophenyl)sulfonyl)-4-butyl-5-phenyl-2,4-dihydro-3H-1,2,4-triazol-3-one CAS 329701-66-8 chemical structure

Description

CATO manufactures 2-((4-Bromophenyl)sulfonyl)-4-butyl-5-phenyl-2,4-dihydro-3H-1,2,4-triazol-3-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.

2-((4-Bromophenyl)sulfonyl)-4-butyl-5-phenyl-2,4-dihydro-3H-1,2,4-triazol-3-one (CAS 329701-66-8) is a high-purity analytical reference standard with the molecular formula C18H18BrN3O3S and a molecular weight of 436.32 g/mol.

Owing to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, bromine substitution, 2-((4-Bromophenyl)sulfonyl)-4-butyl-5-phenyl-2,4-dihydro-3H-1,2,4-triazol-3-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 436.32 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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

Molecular FormulaC18H18BrN3O3S
Molecular Weight436.32 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Halogen ContentBr-containing
Nitrogen Atoms3
Sulfur Atoms1

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