英文名称:cocaethylene--dea schedule ii item; cocaethylene drug standard solution in*acetonitri; ethyl (2R,3S)-3-(benzoyloxy)-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylate; ethyl (1R,2R,3S,5S)-3-(benzoyloxy)-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylate