1,1'-Bis((piperidinocarbonyl)methyl)-4,4'-bipyridinium dichloride (7CI) 1,1'-Di(pentamethylenecarbamoylmethyl)-4,4'-dipyridylium chloride 4,4'-Bipyridinium, 1,1'-bis((piperidinocarbonyl)methyl)-, dichloride (8CI) 4,4'-Bipyridinium, 1,1'-bis(2-oxo-2-(1-piperidinyl)ethyl)-, dichloride (9CI) 4636-79-7 PP-407 Pyridinium, 4,4'-bis(1-piperidinocarbonylmethyl)-4,4'-di-, dichloride