2-(Difluoromethyl)-DL-ornithine hydrochloride 2-(Difluoromethyl)-DL-ornithine monohydrochloride 68278-23-9 70050-56-5 CCRIS 5805 D,L-alpha-Difluoromethylornithine hydrochloride DL-Ornithine, 2-(difluoromethyl)-, monohydrochloride EINECS 269-532-0 Eflornithine hydrochloride Ornithine, 2-(difluoromethyl)-, monohydrochloride