2-(o-Chlorobenzylhydrazino)-3,4,5,6-tetrahydropyrimidine hydrochloride 57513-76-5 Pyrimidine, 2-(o-chlorobenzylhydrazino)-3,4,5,6-tetrahydro-, hydrochloride Pyrimidine, 3,4,5,6-tetrahydro-2-(o-chlorobenzylhydrazino)-, hydrochloride