(-)-Histidine monohydrochloride 645-35-2 Histidine hydrochloride Histidine monohydrochloride Histidine monohydrochloride, L-(+)- Histidine, monohydrochloride, L- L-Histidine hydrochloride L-Histidine monohydrochloride L-Histidine, monohydrochloride NSC257867