Applications: 1,1'-Dimethyl-4,4'-bipyridinium Dichloride is a widely used herbicide that is quick acting and non-selective. 1,1'-Dimethyl-4,4'-bipyridinium Dichloride was found to be linked to the development of Parkinson’s disease.Synonyms: 1,1'-Dimethyl-4,4'-dipyridinium Dichloride; 1,1'-Dimethyl-4,4'-dipyridylium Dichloride; AH 501; AH 501 (herbicide); Cekuquat; Cyclone Max; Dimethyl viologen Chloride; Galokson; Gramixel; Gramoxone; Gramoxone D; Gramoxone Inteon; Gramoxone Max; Gramoxone S; Gramoxone W; Gramoxone Dichloride; Methyl Viologen; Methyl viologen Dichloride; Methylviologen Chloride; N,N'-Dimethyl-4,4'-bipyridinium Dichloride; N,N'-Dimethyl-4,4'-dipyridylium Dichloride; OK 622; Paragreen A; Paraquat; Paraquat Dichloride