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Chromatogram

Description

HPLC method for separation of active ingredients of drug/supplemental composition was developed on an Obelisc R trimodal HPLC column. Compounds are retained by combination of reversed-phase, cation-exchange and anion-exchange mechanisms. Compounds are well separated, and method can be used for quantitation of pyridoxine, ascorbic acid, niacinamide, pantothenic acid, caffeine and riboflavin in a mixture or as separate compounds in various complex mixtures. Various detection techniques can be applied for quantitation (ELSD, UV, LC/MS, Corona). This HPLC method can be adopted as general approach for analysis of active drug components in various formulations.

Method Parameters

Mobile PhaseMeCN/H2O  -5/95%
BufferNaHPO4 pH 3.0 – 30 mM
Flow Rate1.0 ml/min
DetectionUV, 210 nm
Class of CompoundsDrug, Vitamin B₆, Hydrophobic, Ionizable
Analyzing CompoundsPyridoxine, Ascorbic acid, Niacinamide, Pantothenic acid, Caffeine, Riboflavin

HPLC Column Used

Obelisc R , 4.6×150 mm, 5 µm, 100A