Liquid chromatographic determination of cinnamic and benzoic acids in benzoin preparations.
A liquid chromatographic method for the individual determination of benzoic and cinnamic acids in 2 benzoin preparations is presented. The method specifies a reverse phase column and 0.01M KH2PO4-methanol (85 + 15) as mobile phase at a flow rate of 1.8 mL/min, with detection at 254 nm. The method has been applied to 2 benzoin preparations and the results were compared with those from the British Pharmacopoeia method.
D001565:Benzoates / Q000032:analysis*; D001573:Benzoin / Q000032:analysis*; D002853:Chromatography, Liquid; D002934:Cinnamates / Q000032:analysis*; D012997:Solvents; D013056:Spectrophotometry, Ultraviolet
D001565:Benzoates; D002934:Cinnamates; D012997:Solvents; D001573:Benzoin