Back to the overview of different vitamins When you can not open the PDB files you probably have not the free plug-in Chime. You can download Chime, after registration, free of charge by clicking here. Vitamine H/ Biotine Chemische naam: D-Biotine (engels: Biotin) Molecuul formule: C10H16N2O3S Traditionele structuurformule. 3D-ball & stick structuurformule. De PDB file getoont met Chime.