Skeletal formula of <a href="https://en.wikipedia.org/wiki/arbutamine" class="extiw" title="w:arbutamine">arbutamine</a> — a <a href="https://en.wikipedia.org/wiki/Beta-1_adrenergic_receptor" class="extiw" title="w:Beta-1 adrenergic receptor">β<sub>1</sub></a>, <a href="https://en.wikipedia.org/wiki/Beta-2_adrenergic_receptor" class="extiw" title="w:Beta-2 adrenergic receptor">β<sub>2</sub></a> and <a href="https://en.wikipedia.org/wiki/Beta-3_adrenergic_receptor" class="extiw" title="w:Beta-3 adrenergic receptor">β<sub>3</sub></a> adrenergic receptor <a href="https://en.wikipedia.org/wiki/agonist" class="extiw" title="w:agonist">agonist</a>. 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/60789">PubChem</a>