22198-72-7 3H-Pyrazol-3-one, 4-amino-1,2-dihydro-1,5-dimethyl-2-phenyl-, monohydrochloride 4-Amino-1,2-dihydro-1,5-dimethyl-2-phenyl-3H-pyrazol-3-one monohydrochloride 4-Aminoantipyrine hydrochloride Antipyrine, 4-amino-, monohydrochloride EINECS 244-832-4 NSC 1740