Synonyms: 2,3,8,9-Dibenzo-4,7-dimethyl-5,6-dihydro-1,10-phenanthroline;3,3'-Dimethylene-4,4'-dimethyl-2,2'-biquinoline;4,4'-Dimethyl-3,3'-dimethylene-2,2'-biquinoline;5,8-Dimethyl-6,7-dihydrodibenzo[b,j][1,10]phenanthroline;6,7-Dihydro-5,8-dimethyldibenzo[b,j][1,10]phenanthroline; Cuprotest