Identification of haloperidol and tiapride in the urine with thin layer chromatography

How to identify haloperidol and tiapride in the urine by thin layer chromatography was proposed. Optimal systems of solvents were selected by chromatographic mobility of the substances studied in 14 solvents with different polarity. The findings allowed making an optimal choice of the composition and proportion of the solvents. Diethylamine, as a basic modifier, was introduced in the system of solvents. This improved chromatographic mobility of haloperidol and tiapride. Optimal mobile phases, developers were found, the threshold of detectability of the substances in the given conditions was established. The techniques were used for identification of haloperidol and tiapride in the samples from model urine mixture in the presence of non-identified endogenic compounds. They are characterized by rapid performance, selectivity, sensitivity and good reproducibility and can be introduced into practice of chemicotoxicological laboratories.