3-isopropyl-5-methylsulfanyl-1,6-dihydropyrazolo[4,3-d]pyrimidin-7-one CAS 1289139-29-2

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-isopropyl-5-methylsulfanyl-1,6-dihydropyrazolo[4,3-d]pyrimidin-7-one.

3-isopropyl-5-methylsulfanyl-1,6-dihydropyrazolo[4,3-d]pyrimidin-7-one (CAS 1289139-29-2) is a high-purity analytical reference standard with the molecular formula C9H18N4OS and a molecular weight of 230.33 g/mol.

Owing to an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, 3-isopropyl-5-methylsulfanyl-1,6-dihydropyrazolo[4,3-d]pyrimidin-7-one is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 230.33 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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

Why CATO?

• ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
• 130,000+ catalog items in stock, COA supplied with every batch
• Worldwide shipping with full export documentation (HS code guidance available)
• Technical support: +86 18665070610 / Nicole.chen@cato-chem.com