110-89-4
哌啶
→
3280-19-1
1-methoxycarbonyl-3-methyl-2-(N-piperidinyl)cyclobutane
57252-83-2
3-甲基环丁酸
3123-98-6
4-甲基-5-戊内酯
40630-06-6
Methyl 4-methyl-5-oxopentanoate