<a href="https://en.wikipedia.org/wiki/Structural_formula" class="extiw" title="en:Structural formula">Structural formula</a> of <a href="https://en.wikipedia.org/wiki/beta-hydroxy_beta-methylbutyric_acid" class="extiw" title="en:beta-hydroxy beta-methylbutyric acid">beta-hydroxy beta-methylbutyric acid</a>.
<a href="//commons.wikimedia.org/wiki/User:Seppi333" title="User:Seppi333"><b><font color="#32CD32">Seppi</font><i><font color="Black">333</font></i></b></a>; extracted from an image by <a href="//commons.wikimedia.org/wiki/User:Boghog" title="User:Boghog">Boghog</a>
Extracted from <a href="//commons.wikimedia.org/wiki/File:HMB_synthesis.svg" title="File:HMB synthesis.svg">File:HMB synthesis.svg</a>.