289-56-5 3-methyl-5-(methylsulfanyl)-2,4-dihydro-7h-pyrazolo[4,3-d]pyrimidin-7-one AR-1F4319 CAS 289-56-5

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.

289-56-5 3-methyl-5-(methylsulfanyl)-2,4-dihydro-7h-pyrazolo[4,3-d]pyrimidin-7-one AR-1F4319 (CAS 289-56-5), molecular formula C7H8N4OS and molecular weight 196.23 g/mol, is a CATO reference standard with documented purity and traceability.

289-56-5 3-methyl-5-(methylsulfanyl)-2,4-dihydro-7h-pyrazolo[4,3-d]pyrimidin-7-one AR-1F4319 (C7H8N4OS) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, an aromatic ring system. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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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