2-Pyrazoline-1-carboxamidine, 4-((p-chlorophenyl)azo)-3-methyl-5-oxo-, hydrochloride 3695-99-6 4-((p-Chlorophenyl)azo)-3-methyl-5-oxo-2-pyrazoline-1-carboxamidine hydrochloride 4-(4'-Chlor-phenyl-azo)-3-methyl-pyrazolon-(5)-yl-1-amidin hydrochlorid [German] F 2353