Keywords: Cis-Pent-2-en.svg de chem Struktur von cis-Pent-2-en ein Penten own made 2008-01-25 <br/> original text 1 25 01 2008 Roland chem original upload log de wikipedia Hystrix CommonsHelper page de wikipedia Cis-Pent-2-en svg 2008-01-25 12 43 Roland chem 94×18× 3251 bytes <nowiki> Andere Versionen </nowiki> Pent-2-ene |