Abstract
A new, rapid, and precise liquid chromatographic method has been developed for simultaneous identification and quantification of amphetamine,N-methyl-3,4-methylenedioxymetamphetamine,N-ethyl-3,4-methylenedioxymetamphetamine, andN-methyl-1-(3,4-methyl-enedioxyphenyl)-2-butanamine in the presence of other constituents. The compounds were separated on a monolithic column with a gradient prepared from acetonitrile and 20mm monobasic potassium buffer at a flow rate of 1.5 mL min−1. Quantitation was performed with metoclopramide as internal standard. Use of different flow rates was investigated and enabled reduction of the separation time from 11 to 3.5 min for seven substances. The method was then applied to ten seized tablets to identify and quantify their active ingredients.
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