1,1,2-triphenylhydrazine

9-N,N-diphenylaminoanthracene

2-(N-phenylanilino)isoindole-1,3-dione

N-(N-phenylanilino)formamide

2-[3-(2,2-diphenylhydrazinyl)-2,4,6-trinitrophenyl]-1,1-diphenylhydrazine