2 7 dibromo 9 9 dihexyl 9h fluorene July 8, 2019 16 32 64 128 2 7 dibromo fluorene 9 9-dioctyl-2 7-dibromofluorene 2 7-dibromo-9h-fluoren-9-one 2 7-dibromo-9 9-bis(6-bromohexyl)fluorene
