65665-47-6 Butanoic acid, 3-oxo-, 2-((2-methyl-1-oxo-2-propenyl)oxy)ethyl ester, polymer with 2-methyl-2-((1-oxo-2-propenyl)amino)-1-propanesulfonic acid, 2-methyl-2-((1-oxo-2-propenyl)amino)-1-propanesulfonic acid monosodium salt and methyl 2-propenoate