Keywords: Cis-2-pentene.svg cis-2-pentene chemical structure made using BKchem en wikipedia Tomas_er CommonsHelper 2007-02-01 Ampzapper wikipedia en Ampzapper original upload log page en wikipedia Cis-2-pentene svg 2007-02-01 05 16 Ampzapper 976×450×0 930 bytes <nowiki>cis-2-pentene chemical structure made using BKchem</nowiki> Pent-2-ene |