Keywords: Norspermidine molecule ball.png Ball-and-stick model of the norspermidine molecule a polyamine Color code 505050 Carbon C black<br> F0F0F0 Hydrogen H white<br> 3C50FA Nitrogen N blue<br> 2011-09-21 own DS Visualizer Jynto talk Space-filling version cc-zero Images by Jynto Polyamines |