2,3-二苯基喹喔啉

5,6-二苯基-2,3-二羟基吡嗪

3,4-diphenyl-2,3-dihydro-1,2,5-thiadiazole 1,1-dioxide

benzilosazone

1,2-diphenyl-1,2-ethanedione-bisphenylhydrazone (benzil phenylosazone)