4-Ethyl-5-{thieno[2,3-b]quinolin-2-yl}-4H-1,2,4-triazole-3-thiol CAS 478260-35-4

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Ethyl-5-{thieno[2,3-b]quinolin-2-yl}-4H-1,2,4-triazole-3-thiol.

4-Ethyl-5-{thieno[2,3-b]quinolin-2-yl}-4H-1,2,4-triazole-3-thiol (CAS 478260-35-4) is a high-purity analytical reference standard with the molecular formula C15H12N4S2 and a molecular weight of 312.41 g/mol.

Structurally, 4-Ethyl-5-{thieno[2,3-b]quinolin-2-yl}-4H-1,2,4-triazole-3-thiol (C15H12N4S2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 312.41 g/mol, it falls into the moderately-high-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.

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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