1,1'-(p-Phenylenedimethylene)bis(pyridinium bromide) 14208-10-7 DPX N,N'-4-Xylylenebis(pyridinium) Pyridinium, 1,1'-(1,4-phenylenebis(methylene))bis-, dibromide (9CI) Pyridinium, 1,1'-(p-phenylenedimethylene)bis-, dibromide Pyridinium, 1,1'-(p-phenylenedimethylene)di-, dibromide (8CI)