3-Hydroxy-2-methyl-2H-pyrazolo[4,3-d]pyrimidine-7(4H)-thione CAS 100565-58-0

Description

The molecular framework of 3-Hydroxy-2-methyl-2H-pyrazolo[4,3-d]pyrimidine-7(4H)-thione (C6H6N4OS) is characterized by an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

3-Hydroxy-2-methyl-2H-pyrazolo[4,3-d]pyrimidine-7(4H)-thione (CAS 100565-58-0), molecular formula C6H6N4OS and molecular weight 182.20 g/mol, is a CATO reference standard with documented purity and traceability.

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), 3-Hydroxy-2-methyl-2H-pyrazolo[4,3-d]pyrimidine-7(4H)-thione 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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