Skeletal diagram of <a href="https://en.wikipedia.org/wiki/clemastine" class="extiw" title="w:clemastine">clemastine</a>—a 1<sup>st</sup> generation ("sedating") <a href="https://en.wikipedia.org/wiki/H1_antagonist" class="extiw" title="w:H1 antagonist">antihistamine</a>. Self-made using <a href="https://en.wikipedia.org/wiki/BKChem" class="extiw" title="w:BKChem">BKChem</a> and <a href="https://en.wikipedia.org/wiki/Inkscape" class="extiw" title="w:Inkscape">Inkscape</a>.
<a href="//commons.wikimedia.org/wiki/User:JaGa" title="User:JaGa">JaGa</a>
<a rel="nofollow" class="external text" href="https://pubchem.ncbi.nlm.nih.gov/compound/26987">PubChem</a>