<a href="https://en.wikipedia.org/wiki/Skeletal_formula" class="extiw" title="w:Skeletal formula">Skeletal formula</a> of <a href="https://en.wikipedia.org/wiki/Beta_Schaeffer_acid" class="extiw" title="w:Beta Schaeffer acid">Beta Schaeffer acid</a> synonymous with <a href="https://en.wikipedia.org/wiki/6-hydroxy-2-naphthalenesulfonic_acid" class="extiw" title="w:6-hydroxy-2-naphthalenesulfonic acid">6-hydroxy-2-naphthalenesulfonic acid</a> Created using <a href="https://en.wikipedia.org/wiki/ISIS/Draw" class="extiw" title="w:ISIS/Draw">ISIS/Draw</a> and <a href="https://en.wikipedia.org/wiki/Inkscape" class="extiw" title="w:Inkscape">Inkscape</a>
<a href="//commons.wikimedia.org/wiki/User:Krakatit" title="User:Krakatit">Krakatit</a>
<span class="int-own-work" lang="en">Own work</span>