1,1'-Sulfonylbis[2,4,6-trimethylbenzene] 2,2',4,4',6,6'-Hexamethyldiphenyl sulfone 3112-79-6 Benzene, 1,1'-sulfonylbis[2,4,6-trimethyl- Bis(2,4,6-trimethylphenyl) sulfone Mesityl sulfone NSC403319