N-<1-(1,3-benzoxazol-2-yl)-1-methylethyl>-N',N'-dimethylurea

1,3-二甲基巴比妥

N,N-二甲基-2-氨基-2-甲基丙酰胺

4-(dimethylamino)-5,5-dimethyl-1H-imidazole-2-thione

5-(dimethylamino)-4,4-dimethyl-1,3-thiazolidine-2-thione