2-hydroxy-2-(hydroxymethyl)cyclopent-4-ene-1,3-dione

6-溴-1,4-二氧杂螺[4.4]壬-6-烯

2-bromocyclopent-2-en-1-ol

2-羟基甲基-2-环戊酮

2-[[tert-butyl(dimethyl)silyl]oxymethyl]cyclopent-2-en-1-one