5-乙氧基-2-吡咯烷酮

1-[(2-nitrophenyl)methyl]pyrrolidine-2,5-dione

1-nitropyrrolidine-2,5-dione

2,5-二氧代吡咯烷-1-羧酸叔丁酯

3-甲基-2,5-二吡咯烷酮