Histamine dihydrochloride56-92-8100 % similar Histamine51-45-688 % similar Histamine diphosphate51-74-165 % similar 4-(Hydroxymethyl)imidazole hydrochloride32673-41-955 % similar L-Histidinol dihydrochloride1596-64-147 % similar Imidazoleacetic acid hydrochloride3251-69-246 % similar 1H-Imidazole-5-methanol822-55-945 % similar D-Histidine hydrochloride6341-24-844 % similar DL-Histidine hydrochloride6459-59-244 % similar (2S)-2-Amino-3-(1H-imidazol-4-yl)propanamide dihydrochloride71666-95-044 % similar Dl-histidine monohydrochloride monohydrate123333-71-141 % similar L-Histidine hydrochloride monohydrate5934-29-241 % similar Histidine methyl ester dihydrochloride7389-87-941 % similar Detomidine hydrochloride90038-01-040 % similar 1H-Imidazole-5-acetic acid645-65-838 % similar 2-Phenylethylamine hydrochloride156-28-538 % similar Carnosine305-84-037 % similar D-Histidine351-50-837 % similar Dl-histidine4998-57-637 % similar Histidine71-00-137 % similar