(p-Phenylenebis(carbonylmethyl))bis(dimethyl-2-hydroxyethylammonium) dibromide 64059-47-8 AMMONIUM, (p-PHENYLENEBIS(CARBONYLMETHYL))BIS(DIMETHYL-2-HYDROXYETHYL-, DIBROMID Ammonium, (p-phenylenebis(carbonylmethyl))bis(dimethyl-2-hydroxyethyl-, dibromide