5-methyl-5-pentylimidazolidine-2,4-dione

3,4-dimethoxybenzoyl cyanide

N,N'-二甲酰基-N,N'-二甲基乙烯二胺

2-hydroxy-2,4-dimethylpentanamide

2-羟基-2-丙基戊酰胺