3-Phenyl-biuret

7,8,9,10-Tetrachlor-2,5-imino-2,3,5,11-tetraphenyl-2,3,4,5-tetrahydro-1,6,3-benzodioxazocin-4-on

丁炔二酸二甲酯

吡啶

2-苯基氨基亚甲基-丙二酸二乙酯