2-Mercapto-3-methylthieno[2,3-d]pyrimidin-4(3H)-one CAS 554423-03-9

Description

Compared with other compounds in its class, the molecular weight of 198.27 g/mol gives 2-Mercapto-3-methylthieno[2,3-d]pyrimidin-4(3H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

2-Mercapto-3-methylthieno[2,3-d]pyrimidin-4(3H)-one (CAS 554423-03-9), molecular formula C7H6N2OS2 and molecular weight 198.27 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C7H6N2OS2, 2-Mercapto-3-methylthieno[2,3-d]pyrimidin-4(3H)-one contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 198.27 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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.

As a certified reference material (CRM), 2-Mercapto-3-methylthieno[2,3-d]pyrimidin-4(3H)-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

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