4,4'-Dimethyldiphenylsulfone 4,4'-Ditolyl sulfone 599-66-6 Benzene, 1,1'-sulfonylbis[4-methyl- Bis(4-methylphenyl) sulfone Di-p-tolyl sulfone NSC208 Sulfone, di-p-tolyl p,p'-Ditolyl sulfone p-Tolyl sulfone