3-(2,2-Dimethyl-1-benzoylhydrazino)-3-methoxycarbonylmethylpropionate 96804-16-9 Butanedioic acid, (1-benzoyl-2,2-dimethylhydrazino)-, dimethyl ester Dimethyl (1-benzoyl-2,2-dimethylhydrazino)butanedioate