Fischer projection of <small><i>D</i></small>-Glyceraldehyde ((<i>R</i>)-2,3-Dihydroxypropanale)
<a href="//commons.wikimedia.org/wiki/User:Master_Uegly" title="User:Master Uegly">Master Uegly</a>
<span class="int-own-work" lang="en">Own work</span>