2-Naphthalenecarboxylic acid, 5,6,7,8-tetrahydro-6-(1H-imidazol-1-ylmethyl)-, monohydrochloride, hemihydrate 6-(1-Imidazolylmethyl)-5,6,7,8-tetrahydronaphthalene-2-carboxylic acid hydrochloride 1/2H2O 97901-21-8 97901-22-9 DP-1904