Synonyms: 1,1'-[Ethylenebis(oxymethylene)]bis[4-formylpyridiniumchloride], dioxime (7CI); Pyridinium,1,1'-[1,2-ethanediylbis(oxymethylene)]bis[4-[(hydroxyimino)methyl]-, dichloride(9CI); Pyridinium, 1,1'-[ethylenebis(oxymethylene)]bis[4-formyl-, dichloride,dioxime (8CI)