Skeletal formula of <a href="https://en.wikipedia.org/wiki/DS-1" class="extiw" title="w:DS-1">DS-1</a>—an <a href="https://en.wikipedia.org/wiki/imidazopyridine" class="extiw" title="w:imidazopyridine">imidazo[1,2-a]pyridine</a> derivative. Created with <a rel="nofollow" class="external text" href="http://www.chemdoodle.com">ChemDoodle 8.0.0.3b</a> and <a rel="nofollow" class="external text" href="http://www.adobe.com/products/illustrator.html">Adobe Illustrator CC 2015</a>.
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