Keywords: Tolonium chloride.svg Skeletal formula of tolonium chloride toluidine blue O Created using http //www acdlabs com/download/chemsk html ACD/ChemSketch 10 0 and Inkscape Own 2007-06-07 Fvasconcellos 03 10 8 June 2007 UTC Chloride salts of organic compounds Dyes Phenothiazines Quaternary ammonium compounds |