4-((4-Fluorophenyl)thio)-2-(methylthio)benzo[4,5]thieno[3,2-d]pyrimidine CAS 478029-97-9

Description

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.

4-((4-Fluorophenyl)thio)-2-(methylthio)benzo[4,5]thieno[3,2-d]pyrimidine (CAS 478029-97-9), molecular formula C17H11FN2S3 and molecular weight 358.48 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, fluorine substitution, 4-((4-Fluorophenyl)thio)-2-(methylthio)benzo[4,5]thieno[3,2-d]pyrimidine is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 358.48 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

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