3-benzoyl-2,8,8-triphenyl-1,6-di-p-tolyl-1,6-diazaspiro[3.4]oct-2-ene-5,7-dione

S-Phenyl N-(benzoylformyl)-N-p-tolylthiocarbamate

4-甲酰苯胺

1,3-二对甲苯基碳二酰亚胺

对甲氧基苯异氰酸酯