5-Chloro-2-(4-fluorophenyl)-4-(4-methoxyphenoxy)pyridazin-3(2H)-one CAS 478049-35-3

Description

The occurrence of 5-Chloro-2-(4-fluorophenyl)-4-(4-methoxyphenoxy)pyridazin-3(2H)-one is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

5-Chloro-2-(4-fluorophenyl)-4-(4-methoxyphenoxy)pyridazin-3(2H)-one (CAS 478049-35-3), molecular formula C17H12ClFN2O3 and molecular weight 346.74 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C17H12ClFN2O3, 5-Chloro-2-(4-fluorophenyl)-4-(4-methoxyphenoxy)pyridazin-3(2H)-one contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 346.74 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

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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