1-Phenyl-3,5-dimethyl-4-nitroso-pyrazol [German] 1H-Pyrazole, 3,5-dimethyl-4-nitroso-1-phenyl- (9CI) 3,5-Dimethyl-4-nitroso-1-phenylpyrazole 4-23-00-00627 (Beilstein Handbook Reference) 715-99-1 BRN 0168053 J 55 (VAN) J-55 NSC 18725 Pyrazole, 3,5-dimethyl-4-nitroso-1-phenyl-