戊二酸二丁酯

1,1-二丁氧基环己烷

2-氧代-环戊烷羧酸丁酯

2-N-丁氧基-5-硝基吡啶

[(1R,2S,5R)-5-methyl-2-propan-2-ylcyclohexyl] (2S)-5-oxopyrrolidine-2-carboxylate