Skeletal formula of <a href="https://en.wikipedia.org/wiki/anserine" class="extiw" title="w:anserine">anserine</a> — a <a href="https://en.wikipedia.org/wiki/dipeptide" class="extiw" title="w:dipeptide">dipeptide</a> containing <a href="https://en.wikipedia.org/wiki/beta-Alanine" class="extiw" title="w:beta-Alanine">β-alanine</a> and <a href="https://en.wikipedia.org/wiki/histidine" class="extiw" title="w:histidine">histidine</a> with carbon label shown. Created with <a rel="nofollow" class="external text" href="http://www.chemdoodle.com">ChemDoodle 7.0.2</a> and <a rel="nofollow" class="external text" href="http://www.adobe.com/products/illustrator.html">Adobe Illustrator CC 2015</a>.
<a href="//commons.wikimedia.org/wiki/User:Vaccinationist" title="User:Vaccinationist">Vaccinationist</a>
Own work  using: <a rel="nofollow" class="external text" href="https://pubchem.ncbi.nlm.nih.gov/compound/112072">PubChem</a>