4-Carboxybenzaldehyd Strukturformel
<a href="//commons.wikimedia.org/w/index.php?title=User:Souna23&amp;action=edit&amp;redlink=1" class="new" title="User:Souna23 (page does not exist)">Souna23</a>
2019-01-27
<span class="int-own-work" lang="en">Own work</span>