1,1,3,3-tetrapropylurea

(2,5-dioxopyrrolidin-1-yl) N,N-dipropylcarbamate

(2,5-dioxopyrrolidin-1-yl) N-naphthalen-1-ylcarbamate

2-羟基苯并咪唑

2,3-二氢吡啶并[2,3-d][1,3]噁唑-2-酮