2-羟基-2-环戊烯-1-酮

2-氧代-2,5,6,7-四氢-1H-环戊二烯并[b]吡啶-3-甲腈

1-(iodomethyl)cyclopentan-1-ol

2-[3-(benzenesulfonyl)prop-1-en-2-yl]cyclopentan-1-one

2-(cyclohexylmethylidene)cyclopentan-1-one