Structures of salvageable forms of the <a href="https://en.wikipedia.org/wiki/nicotinamide_adenine_dinucleotide" class="extiw" title="w:nicotinamide adenine dinucleotide">NAD+</a> precursors <a href="https://en.wikipedia.org/wiki/nicotinic_acid" class="extiw" title="w:nicotinic acid">nicotinic acid</a>, <a href="https://en.wikipedia.org/wiki/nicotinamide" class="extiw" title="w:nicotinamide">nicotinamide</a> and nicotinamide riboside. Created using <a rel="nofollow" class="external text" href="http://www.acdlabs.com/download/chemsk.html">ACD/ChemSketch 10.0</a> and <a href="https://en.wikipedia.org/wiki/Inkscape" class="extiw" title="w:Inkscape">Inkscape</a>.
<a href="//commons.wikimedia.org/wiki/User:Fvasconcellos" title="User:Fvasconcellos">Fvasconcellos</a> 23:09, 9 December 2007 (UTC). <a href="https://en.wikipedia.org/wiki/Image:NA,_N_and_NR.png" class="extiw" title="w:Image:NA, N and NR.png">File<i><b>:</b></i>NA, N and NR.png</a> by <a href="https://en.wikipedia.org/wiki/User:TimVickers" class="extiw" title="w:User:TimVickers">Tim Vickers</a>.
Vector version of <a href="https://en.wikipedia.org/wiki/Image:NA,_N_and_NR.png" class="extiw" title="w:Image:NA, N and NR.png">File<i><b>:</b></i>NA, N and NR.png</a> by <a href="https://en.wikipedia.org/wiki/User:TimVickers" class="extiw" title="w:User:TimVickers">Tim Vickers</a>.