(-)-Histidine monohydrochloride 645-35-2 AI3-18473 EINECS 211-438-9 Histidine hydrochloride (VAN) Histidine monohydrochloride, L-(+)- L-Histidine hydrochloride L-Histidine hydrochloride (VAN) L-Histidine, monohydrochloride L-Histidine, monohydrochloride, hydrate NSC 257867