1-Propanesulfonic acid, 2-methyl-2-((1-oxo-2-propenyl)amino)-, monosodium salt, polymer with N,N'-methylenebis(2-propenamide) 150121-34-9 68516-89-2 Sodium 2-acrylamido-2-methylpropanesulfonate, methylenebisacrylamide polymer