title: Is ecgonine methyl ester a major in vivo metabolite of cocaine in humans?
authors.forename: S B
authors.initials: SB
authors.lastname: Karch
mesh_terms: D003042:Cocaine / Q000031:analogs & derivatives* / Q000097:blood / Q000378:metabolism*; D006801:Humans
chemical_list: D003042:Cocaine; C034524:ecgonine methyl ester