1,4-Bis(4-aldoximinopyridinium)butanediol-2,3-bibromide 1,4-Bis(4-hydroxyiminomethyl-pyridinium-(1))-butanediol-2,3 dibromid [German] 63906-14-9 Pyridinium, 1,1'-(2,3-dihydroxytetramethylene)bis(4-formyl-, dibromide, dioxime R 21