(2,5-dimethyl-phenyl)-hydrazine-N,N'-dicarboxylic acid diethyl ester

ethyl N-(ethoxycarbonylamino)-N-[4-[ethoxycarbonyl-(ethoxycarbonylamino)amino]-2,5-dimethylphenyl]carbamate

1-[(2,5-dimethylphenyl)methyl]-3-phenylurea

4-[[4-[bis[4-(dimethylamino)phenyl]methyl]phenyl]-[4-(dimethylamino)phenyl]methyl]-N,N-dimethylaniline

1,4-dichloro-2,5-bis(chloromethyl)benzene