4-[(5-chloropyridin-2-yl)oxy]benzoic acid CAS 289044-48-0

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.

4-[(5-chloropyridin-2-yl)oxy]benzoic acid (CAS 289044-48-0), molecular formula C12H8ClNO3 and molecular weight 249.65 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C12H8ClNO3, 4-[(5-chloropyridin-2-yl)oxy]benzoic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 249.65 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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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