2,5,8,11-Tetrabromocycloocta[1,2-b:4,3-b':5,6-b'':8,7-b''']tetrathiophene 250mg

2,5,8,11-Tetrabromocycloocta[1,2-b:4,3-b':5,6-b'':8,7-b''']tetrathiophene 250mg