64253-90-3 Benzene, 1-[(2,2,3,3,4,4,5,5,6,6,7,7-dodecafluoroheptyl)oxy]-4-ethenyl- 832084-21-6 4,6-Ditellura-2,3,5,7,8-pentasilanonane,2,2,8,8-tetramethyl-5,5-diphenyl-3,3,7,7-tetrakis(trimethylsilyl)- 832084-27-2 4,7-Dithia-2,3,5,6,8,9-hexasiladecane,2,2,5,5,6,6,9,9-octamethyl-3,3,8,8-tetrakis(trimethylsilyl)-