Skeletal formulae of two <a href="https://en.wikipedia.org/wiki/amphetamine" class="extiw" title="w:amphetamine">amphetamine</a> enantiomers:
<ul><li>(<i>R</i>)-(−)-amphetamine (also known as <small>L</small>-amphetamine or <a href="https://en.wikipedia.org/wiki/levoamphetamine" class="extiw" title="w:levoamphetamine">levoamphetamine</a>), and</li>
<li>(<i>S</i>)-(+)-amphetamine (also known as <small>D</small>-amphetamine or <a href="https://en.wikipedia.org/wiki/dextroamphetamine" class="extiw" title="w:dextroamphetamine">dextroamphetamine</a>).</li></ul>
Created with <a rel="nofollow" class="external text" href="http://www.chemdoodle.com">ChemDoodle 8.1.0</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/32893">(<i>R</i>)-(−)-amphetamine on PubChem</a><br><a rel="nofollow" class="external text" href="https://pubchem.ncbi.nlm.nih.gov/compound/5826">(<i>S</i>)-(+)-amphetamine on PubChem</a>