5,6-Diamino-2-thioxo-2,3-dihydropyrimidin-4(1H)-one sulfate hydrate CAS 304851-89-6

Description

5,6-Diamino-2-thioxo-2,3-dihydropyrimidin-4(1H)-one sulfate hydrate (CAS 304851-89-6), molecular formula C4H6N4OSH2O4SH2O and molecular weight 274.27 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C4H6N4OSH2O4SH2O, 5,6-Diamino-2-thioxo-2,3-dihydropyrimidin-4(1H)-one sulfate hydrate contains a carbohydrate-derived structure, an amide group, a sulfone group; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 274.27 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.

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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