4-Ethyl-5-(4-ethyl-5-methylthiophen-3-yl)-4H-1,2,4-triazole-3-thiol CAS 438228-34-3

Description

4-Ethyl-5-(4-ethyl-5-methylthiophen-3-yl)-4H-1,2,4-triazole-3-thiol (CAS 438228-34-3), molecular formula C11H15N3S2 and molecular weight 253.39 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 4-Ethyl-5-(4-ethyl-5-methylthiophen-3-yl)-4H-1,2,4-triazole-3-thiol (C11H15N3S2) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), 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).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

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

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