N,N-dimethyl-2-oxo-2-phenylacetamide

N,N-二乙基苯甲酰胺

N,N-二甲基苯硫代甲酰胺

1,1-dimethyl-3-(N-methyl-2,4-dinitroanilino)urea

1,1,3,3-四甲基脲