5-(3,4-Dimethoxybenzylidene)-2-(4-ethoxyphenyl)thiazolo[3,2-b][1,2,4]triazol-6(5H)-one CAS 538340-02-2

Purity 97%+In StockPharmaceutical Standards
CAS No.538340-02-2
Molecular FormulaC21H19N3O4S
Molecular Weight409.46 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-(3,4-Dimethoxybenzylidene)-2-(4-ethoxyphenyl)thiazolo[3,2-b][1,2,4]triazol-6(5H)-one CAS 538340-02-2 chemical structure

Description

The occurrence of 5-(3,4-Dimethoxybenzylidene)-2-(4-ethoxyphenyl)thiazolo[3,2-b][1,2,4]triazol-6(5H)-one is closely related to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 5-(3,4-Dimethoxybenzylidene)-2-(4-ethoxyphenyl)thiazolo[3,2-b][1,2,4]triazol-6(5H)-one (CAS 538340-02-2), a certified reference material (molecular formula C21H19N3O4S, MW 409.46 g/mol) for analytical method development and quality control.

5-(3,4-Dimethoxybenzylidene)-2-(4-ethoxyphenyl)thiazolo[3,2-b][1,2,4]triazol-6(5H)-one (C21H19N3O4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC21H19N3O4S
Molecular Weight409.46 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
Degree of Unsaturation (DBE)14.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1984
Nitrogen Atoms3
Sulfur Atoms1

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