Keywords: Hydrocodone-Spartan-PM3-3D-balls.png Ball-and-stick model of the hydrocodone molecule C<sub>18</sub>H<sub>21</sub>NO<sub>3</sub> Colour code Carbon C black Hydrogen H white Nitrogen N blue Oxygen O red Structure calculated with http //www wavefun com/products/macintosh/Student/mac_student html Spartan Student 4 1 using the PM3 semi-empirical method based on the crystal structure of a thiobarbituric acid derivative of hydrocodone from http //dx doi org/10 1016/j tetasy 2009 02 005 Tetrahedron Asymmetry 2009 20 327 334 Image generated in http //accelrys com/products/discovery-studio/visualization/discovery-studio-visualizer html Accelrys DS Visualizer Own 2011-02-11 Ben Mills Benjah-bmm27 Images by Ben Mills Hydrocodone |