1134-35-6 2,2'-BIPYRIDINE, 4,4'-DIMETHYL- 2,2'-Bi-4-picoline (8CI) 2,2'-Bipyridyl, 4,4'-dimethyl- 4,4'-Dimethyl-2,2'-bipyridine 4,4'-Dimethyl-2,2'-bipyridyl 4,4'-Dimethyl-2,2'-dipyridyl EINECS 214-483-2 NSC 3261