methyl 3-(2,2,6,6-tetramethyl-4-oxopiperidin-1-yl)prop-2-enoate

N-丁基-2,2,6,6-四甲基-4-哌啶胺

四甲基哌啶醇

3-氨基-2,2,5,5-四甲基-1-吡咯烷酮

4-氨基-2,2,6,6-四甲基哌啶