1,1'-Dimethyl-4,4'-bipyridinium 1,1'-Dimethyl-4,4'-bipyridinium cation 1,1'-Dimethyl-4,4'-bipyridinium salt 1,1'-Dimethyl-4,4'-bipyridyldiylium 1,1'-Dimethyl-4,4'-bipyridyldiylium ion (8CI)(9CI) 4,4'-bipyridinium, 1,1'-dimethyl- 4685-14-7 CCRIS 7731 Dextrone Dextrone X Dimethyl viologen HSDB 1668 Methyl viologen (2+) Methyl viologen ion(2+) Paraquat Paraquat dication Paraquat ion Spraytop-graze Starfire Weedol