Abstract: The article investigates the applicability of the amino column XBridge Amide 150×4.6 mm for separation of 4-hydroxybenzoic acid esters (parabens) — based on experience with hydrophilic interaction liquid chromatography used for analysis of various compounds. The study analysed the retention times, elution order and resolution between the peaks of parabens and impurity A (4-hydroxybenzoic acid) while using acetonitrile : phosphate buffer mobile phases containing 7–10 % of acetonitrile and acetonitrile : water mobile phases containing 96–9...
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Topics: 
Chromatography