15172-75-5 AMMONIUM, (4,4'-BIPHENYLENEBIS(2-OXOETHYLENE))BIS(DIMETHYL(1,1-DIMETHYL-2-HYDROX Ammonium, (4,4'-biphenylenebis(2-oxoethylene))bis(dimethyl(1,1-dimethyl-2-hydroxyethyl)-, dibromide, hemihydrate