Abstract
A GLC assay was developed for pseudoephedrine in serum using 3-methylamino-1-phenyl-1-propanol as an internal standard. After extraction from serum with benzene under alkaline conditions, pseudoephedrine was derivatized with pentafluorobenzyl bromide and quantitated by electron-capture GLC. The method has a detection limit of ˜0.02 μg/ml of serum using 1-ml samples.
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