title: A thin-layer-chromatographic procedure for the separation of pethidine and its metabolites in urine [proceedings].
mesh_terms: D002855:Chromatography, Thin Layer / Q000379:methods; D006801:Humans; D008614:Meperidine / Q000031:analogs & derivatives / Q000652:urine*
chemical_list: D008614:Meperidine