001. Diphenol Sulfone 002. 4,4'-Diamino Diphenyl Sulfone 003. 4,4'-Dichloro Diphenyl Sulfone 004. o-Amino Diphenyl Sulfone 005. 4,4'-Bis(4-chlorophenyl)sulfonyl-1,1'-biphenyl 006. 3,3'-Diamino Diphenyl Sulphone 007. 4,4'-Dihydroxy Diphenyl Sulfone 008. 4,4’-Dihydroxybenzophenone 009. 4,4’-Difluorobenzophenon