845267-78-9
2,4-二哌啶酮-1-甲酸叔丁酯
→
~99%
50607-30-2
2,4-哌啶二酮
90608-67-6
1026386-87-7
ethyl 2,4-dioxopiperidine-3-carboxylate
476014-76-3
4-羟基-2-哌啶酮