title: Simultaneous analysis of tramadol, metoprolol and their metabolites in human plasma and urine by high performance liquid chromatography.
authors.affiliation: Marine Drug & Food Institute, Ocean University of China, Qingdao, China.
authors.forename: Qin
authors.initials: Q
authors.lastname: Li
authors.forename: Rui
authors.initials: R
authors.lastname: Wang
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000032:analysis*; D000701:Analgesics, Opioid / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006801:Humans; D008790:Metoprolol / Q000032:analysis*; D014147:Tramadol / Q000032:analysis*
chemical_list: D000319:Adrenergic beta-Antagonists; D000701:Analgesics, Opioid; D014147:Tramadol; D008790:Metoprolol