Synonyms: Bisimidazo2,1-a:2',1'-a'anthra2,1,9-def:6,5,10-d'e'f'diisoquinoline-dione(mixturewithcis-isomer);PERYLENEBISIMIDE WITH EXTENDED PI SYSTEM;Diimidazo[2,1-a:2',1'-a']anthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-8,17-dione,1,2,10,11-tetrahydro- (9CI);