phthalic acid di-p-tolyl ester

2,3-diphenyl-2,3-dihydro-isoquinoline-1,4-dione

1-N',2-N'-diphenylethanediimidamide

N,Nˊ-二苯基乙脒

2-苯胺基-2H-异吲哚-1,3-二酮