Skeletal formulas of the 3-amino-4-[2-[(<b>d</b>i(methyl)<b>a</b>mino)methyl]phenyl]<b>s</b>ulfanyl<b>b</b>enzonitrile molecule, also known as <b><a href="https://en.wikipedia.org/wiki/DASB" class="extiw" title="w:DASB">DASB</a></b>, a compound used in <a href="https://en.wikipedia.org/wiki/positron_emission_tomography" class="extiw" title="w:positron emission tomography">PET</a> scans. Shown here with and without the radioactive carbon-11 marker.
<a href="//commons.wikimedia.org/wiki/User:Jynto" title="User:Jynto">Jynto</a> (<a href="//commons.wikimedia.org/wiki/User:Jynto/Gallery" title="User:Jynto/Gallery">more from this user</a>)
<span class="int-own-work" lang="en">Own work</span>.