Synonyms: 1,1'-Tetramethylenebis[pyridiniumbromide] (7CI); Pyridinium, 1,1'-(1,4-butanediyl)bis-, dibromide (9CI);Pyridinium, 1,1'-tetramethylenedi-, dibromide (8CI);1,1'-(1,4-Butanediyl)bis[pyridinium] dibromide; 1,4-Bis(pyridinium)butanedibromide; Tetramethylenebis(pyridinium) dibromide