(p-Phenylenebis(oxytrimethylene))bis(diethyl(p-nitrobenzyl)ammonium bromide) dihydrate Ammonium, (p-phenylenebis(oxytrimethylene))bis(diethyl(p-nitrobenzyl)-, dibromide, dihydrate BS2420000 Ro 2-4658 gamma,gamma'-(p-Phenylenedioxy)bis(diethyl(p-nitrobenzyl)propylammonium bromide) dihydrate