7-Methylthieno[3,2-d]pyrimidine-2,4(1H,3H)-dione CAS 35265-81-7

Description

The occurrence of 7-Methylthieno[3,2-d]pyrimidine-2,4(1H,3H)-dione is closely related to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

7-Methylthieno[3,2-d]pyrimidine-2,4(1H,3H)-dione (CAS 35265-81-7), molecular formula C7H8N2O2S and molecular weight 184.22 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C7H8N2O2S, 7-Methylthieno[3,2-d]pyrimidine-2,4(1H,3H)-dione contains an amide group, a sulfone group, a carboxylic acid group, 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 184.22 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.

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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