845267-80-3
tert-butyl 5-ethyl-2,4-dioxopiperidine-1-carboxylate
→
~52%
73290-32-1
5-乙基-2,4-哌啶二酮
100132-70-5
5-ethyl-2,4-dioxo-piperidine-3-carboxylic acid ethyl ester