Histamine dihydrochloride56-92-8100 % similar Histamine51-45-688 % similar Histamine diphosphate51-74-165 % similar 4-(Hydroxymethyl)imidazole hydrochloride32673-41-955 % similar Imidazolyl-4-ethanol872-82-252 % similar L-Histidinol dihydrochloride1596-64-147 % similar D(+)-Histidinol dihydrochloride75614-84-547 % similar Imidazoleacetic acid hydrochloride3251-69-246 % similar 4-Imidazolemethanol822-55-945 % similar L-Histidine hydrochloride (1:?)1007-42-744 % similar D-Histidine hydrochloride6341-24-844 % similar L-Histidine monohydrochloride645-35-244 % similar DL-Histidine hydrochloride6459-59-244 % similar H-His-NH2.2HCl71666-95-044 % similar 4(5)-Cyanomethylimidazole18502-05-141 % similar Dl-histidine monohydrochloride monohydrate123333-71-141 % similar Histidine monohydrochloride monohydrate5934-29-241 % similar Histidine methyl ester dihydrochloride7389-87-941 % similar Alpha-methyl-dl-histidine dihydrochloride32381-18-340 % similar Detomidine hydrochloride90038-01-040 % similar