English quaternary ammonium compounds quaternary ammonium http://en.wikipedia.org/wiki/Quaternary_ammonium_cation English English English English четвертичные аммонийные соединения (ЧАСы) quaternary ammonium cations Quaternary ammonium cations English Quaternary ammonium cation quaternary ammonium англ. quaternary ammonium compounds quaternary ammonium Quaternary ammonium cation quaternary ammonium compound tetraalkylammonium English quat Quaternary ammonium cation English English quaternary ammonium quaternary ammonium English Quaternary amines кват Quaternary Ammonium Compounds http://en.wikipedia.org/wiki/Quaternary_ammonium_cation English quaternary ammonium tetraalkylammonium Quaternary Ammonium Cation English English English English English English English http://en.wikipedia.org/wiki/Quaternary_ammonium_cation