4,4'-bis(disubstituted-amino)-n-methyl-diphenylamine
4,4'-bis(monosubstitutedamino)-n-substituted-diphenylamine
4-(morpholinothio)-arylamines
4-disubstituted-amino-4'-mono-substituted-amino-n-methyl-dip...
4-disubstitutedamino-4'-mono-substitutedamino diphenylamines