. . "RIV/00216208:11310/09:10001180!RIV10-MZ0-11310___" . "Enatiomeric determination of tramadol and O-desmethyltramadol in human urine by gas chromatography?mass spectrometry" . "Chytil, Luk\u00E1\u0161" . "Enatiomeric determination of tramadol and O-desmethyltramadol in human urine by gas chromatography?mass spectrometry"@en . "ramadol; O-Desmethyltramadol; Enantiomeric separation; Metabolic phenotype; Urine; Excretion; Probe drug; Cytochrome P450 2D6"@en . . "\u0160t\u00EDcha, Martin" . . "NL - Nizozemsko" . "P(1A8632)" . "20-21" . "A GC?MS assay for stereoselective determination of tramadol and its pharmacologically active phase I metabolite O-desmethyltramadol in human urine was developed. Nefopam was used as internal standard. The method involves a simple solid phase extraction with chiral analysis by gas chromatography?electron ionization mass spectrometry." . . . . . . . "A GC?MS assay for stereoselective determination of tramadol and its pharmacologically active phase I metabolite O-desmethyltramadol in human urine was developed. Nefopam was used as internal standard. The method involves a simple solid phase extraction with chiral analysis by gas chromatography?electron ionization mass spectrometry."@en . . "JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES" . "[5E7B59AE753D]" . "5"^^ . "Slana\u0159, Ond\u0159ej" . "1570-0232" . "Perl\u00EDk, Franti\u0161ek" . "000267453800021" . "877" . . . "RIV/00216208:11310/09:10001180" . "Matou\u0161kov\u00E1, Olga" . . . "11310" . "1"^^ . . . . "6"^^ . . "Enatiomeric determination of tramadol and O-desmethyltramadol in human urine by gas chromatography?mass spectrometry" . "313134" . "Enatiomeric determination of tramadol and O-desmethyltramadol in human urine by gas chromatography?mass spectrometry"@en . .