6-Hydroxy-3-methyl-5-phenyl-1-(p-tolyl)pyridazin-4(1H)-one CAS 89314-17-0

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.

6-Hydroxy-3-methyl-5-phenyl-1-(p-tolyl)pyridazin-4(1H)-one (CAS 89314-17-0), molecular formula C18H16N2O2 and molecular weight 292.33 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 6-Hydroxy-3-methyl-5-phenyl-1-(p-tolyl)pyridazin-4(1H)-one (C18H16N2O2) 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 its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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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