6-methyl-1,3-oxazine-2,4-dione

2,3-二氨基甲苯

1,3-双(1-异氰酸根-1-甲基乙基)苯

N-环己基脲

8a-benzyl-6,7-dihydro-1H-[1,3]thiazolo[3,2-a][1,3,5]triazine-2,4-dione