Structure of 3,4-dihydroxyphenylacetic acid (DOPAC)
 <a href="https://en.wikipedia.org/wiki/Skeletal_formula" class="extiw" title="w:Skeletal formula">Skeletal formula</a> of <b>3,4-dihydroxyphenylacetic acid</b> (<a href="https://en.wikipedia.org/wiki/Dopac" class="extiw" title="w:Dopac">Dopac</a>). Adapted from <a href="//commons.wikimedia.org/wiki/File:3,4-Dihydroxymandelic_acid.svg" title="File:3,4-Dihydroxymandelic acid.svg">File:3,4-Dihydroxymandelic acid.svg</a> with <a rel="nofollow" class="external text" href="http://www.inkscape.org">Inkscape</a> and <a rel="nofollow" class="external text" href="http://www.vim.org">vim</a>.
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