Molecular model of ascorbic acid, also know as vitamin C, in ball and stick form. "Vitamin C or L-ascorbic acid, or simply ascorbate (the anion of ascorbic acid), is an essential nutrient for humans and certain other animal species." --http://en.wikipedia.org/wiki/Vitamin_C Model created using VMD: http://www.ks.uiuc.edu/Research/vmd/Successfully printed by a Replicator 2 in PLA using MakerWare(TM) 2.4.1.24, standard resolution (3 shells, 25% infill), with raft and supports. Different representations are provided as a guide to coloring the molecule by hand.