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  1. Cyclopentene - Wikipedia

  2. Cyclopentene | C5H8 - ChemSpider

  3. Cyclopentene | C5H8 | CID 8882 - PubChem

  4. 环戊烯 - 百度百科

  5. Structure of CYCLOPENTENE (C5H8) - Mol-Instincts

  6. Cyclopentene - (Organic Chemistry) - Vocab, Definition ... - Fiveable

  7. Cyclopentene - NIST Chemistry WebBook

  8. Cyclopentene - NIST Chemistry WebBook

  9. Cyclopentene - an overview | ScienceDirect Topics

  10. Cyclopentene - NIST Chemistry WebBook