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  1. 1-Butene | C4H8 | CID 7844 - PubChem

  2. 1-Butene - NIST Chemistry WebBook

  3. 1-Butene - Wikipedia

  4. 1-BUTENE Structure - C4H8 - Over 100 million chemical

  5. 1-Butene | C4H8 - ChemSpider

  6. 1-butene Formula & Structure - Purdue University

  7. Butene | Alkenes, Polymers, Petrochemicals | Britannica

  8. Butene - Wikipedia

  9. Butene - Purdue University

  10. 3.4. Isomers | Organic Chemistry 1: An open textbook - Lumen …