Divinyl sulfone77-77-0100 % similar 1,1′-[Methylenebis(sulfonyl)]bis[ethene]3278-22-642 % similar Methyl vinyl sulfone3680-02-242 % similar (Ethylsulfonyl)ethene1889-59-436 % similar Sodium vinylsulfonate3039-83-636 % similar 1,3-Bis(ethenylsulfonyl)-2-propanol67006-32-032 % similar