77982-78-6
Bicyclo[3.1.0]hexane-6-carboxylic acid, 1-[(trimethylsilyl)oxy]-, methylester
→
~83%
94767-50-7
2,4,4a,5,6,7-hexahydrocyclopenta[c]pyridazin-3-one
20826-94-2
2-氧代环戊基乙酸乙酯
~61%