5-Hexyl-2-(4-(2-hydroxyethyl)-3-methyl-5-oxo-2,5-dihydro-1H-pyrazol-1-yl)-6-methylpyrimidin-4(3H)-one CAS 866138-06-9

Description

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.

5-Hexyl-2-(4-(2-hydroxyethyl)-3-methyl-5-oxo-2,5-dihydro-1H-pyrazol-1-yl)-6-methylpyrimidin-4(3H)-one (CAS 866138-06-9), molecular formula C17H26N4O3 and molecular weight 334.41 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 5-Hexyl-2-(4-(2-hydroxyethyl)-3-methyl-5-oxo-2,5-dihydro-1H-pyrazol-1-yl)-6-methylpyrimidin-4(3H)-one (C17H26N4O3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. 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).

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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