Condensed formulae of butane, C<sub>4</sub>H<sub>10</sub>.
<b>Vectorization: </b> <a href="//commons.wikimedia.org/wiki/User:Alhadis" title="User:Alhadis">Alhadis</a>
16 April 2006 (original upload date)
Own work based on: <a href="//commons.wikimedia.org/wiki/File:Butane-condensed-structural-formulae.png" title="File:Butane-condensed-structural-formulae.png">Butane-condensed-structural-formulae.png</a> <i>by</i> <a href="//commons.wikimedia.org/wiki/User:Benjah-bmm27" title="User:Benjah-bmm27">Ben Mills</a>