4-(2H-1,3-Benzodioxol-5-yl)-3,7,7-trimethyl-2H,4H,5H,6H,7H,8H,9H-pyrazolo[3,4-b]quinolin-5-one CAS 865658-70-4

Description

4-(2H-1,3-Benzodioxol-5-yl)-3,7,7-trimethyl-2H,4H,5H,6H,7H,8H,9H-pyrazolo[3,4-b]quinolin-5-one (CAS 865658-70-4), molecular formula C20H21N3O3 and molecular weight 351.40 g/mol, is a CATO reference standard with documented purity and traceability.

4-(2H-1,3-Benzodioxol-5-yl)-3,7,7-trimethyl-2H,4H,5H,6H,7H,8H,9H-pyrazolo[3,4-b]quinolin-5-one (C20H21N3O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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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