6-溴-1,4-二氧杂螺[4.4]壬-6-烯

cyclopent-2-en-1-yloxymethylbenzene

cyclopenten-1-yloxy-tri(propan-2-yl)silane

2-bromo-3-fluorocyclopentan-1-one

3-(3-氧代-1-环戊基)-苯腈