Keywords: 5-Hydroxy-L-tryptophan-3D-spacefill.png Space-filling model of the 5-hydroxytryptophan molecule a chemical precursor of serotonin and melatonin This image shows the L isomer in neutral form Colour code 505050 Carbon C black<br> F0F0F0 Hydrogen H white<br> F51E1E Oxygen O red<br> 3C50FA Nitrogen N blue<br> 2011-02-12 own DS Visualizer Jynto talk Neutral form ball-and-stick version Zwitterionic form ball-and-stick version Zwitterionic form space-filling version cc-zero Hydroxytryptophan L-Amino acids Images by Jynto Space-filling models |