title: Determination of methylphenidate and its main metabolite in plasma by gas chromatography-chemical ionization mass spectrometry.
mesh_terms: D000328:Adult; D000818:Animals; D004355:Drug Stability; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D008297:Male; D008774:Methylphenidate / Q000031:analogs & derivatives* / Q000097:blood*; D011817:Rabbits
chemical_list: D008774:Methylphenidate; C009189:ritalinic acid