Keywords: Hemicholinium-3.svg Skeletal formula of hemicholinium-3 Created using http //www acdlabs com/download/chemsk html ACD/ChemSketch 10 0 and Inkscape Own 2007-04-24 Fvasconcellos 16 06 24 April 2007 UTC Tertiary alcohols Biphenyls Morpholines Quaternary ammonium compounds |