. . "ethylphenidate" . "ethylenimine" . . . . . . "EPH" . . "3080846" . "Ethylphenidate" . . . . . . . . "Ethylphenidate" . . . . . . . . "984DG861KD" . . . "57413-43-1" . . "Ethylnaphthidate" . .