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In this study, a simple analytical method for the determination of γ‐aminobutyric acid, gabapentin, and baclofen by using high‐performance liquid chromatography with fluorescence detection was developed. An amidogen‐reactive fluorescence labeling reagent, 4‐(carbazole‐9‐yl)‐benzyl chloroformate was first used to sensitively label these analytes. The completed labeling of these analytes can be finished...
A rapid, sensitive, and selective precolumn derivatization method for the simultaneous determination of eight thiophenols using 3‐(2‐bromoacetamido)‐N‐(9‐ethyl‐9H)‐carbazol as a labeling reagent by high‐performance liquid chromatography with fluorescence detection has been developed. The labeling reagent reacted with thiophenols at 50°C for 50 min in aqueous acetonitrile in the presence of borate...
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