1,1-dibutyl-3-methylurea

[2-(methylcarbamoyloxy)phenyl] N-methylcarbamate

methyl N-methyl-N-(methylcarbamoyl)carbamate

甲基氨基甲酸4-(二甲基氨基)-5-甲基-2-(1-甲基乙基)苯基酯

1-甲基-1-亚硝基-3-苯基脲