The molecule is an organic cation that consists of 4,4'-bipyridine bearing two N-methyl substituents loctated at the 1- and 1'-positions. It has a role as a herbicide. It derives from a hydride of a 4,4'-bipyridine.
1-methyl-4-(1-methylpyridin-1-ium-4-yl)pyridin-1-ium