4 7 dibromo 5 6 difluorobenzo c 1 2 5 thiadiazole July 8, 2019 16 32 64 128 4 7-dibromo-5 6-dinitro-2 1 3-benzothiadiazole 4 7-dibromo-2 1 3-benzothiadiazole 4 7-dibromo-2 1 3-benzoselenadiazole 4 7-dibromobenzo c 1 2 5 thiadiazole
