73165-63-6 Pirakril Pyracryl beta-Alanine, N-(N-(1-oxo-2-propenyl)-beta-alanyl)-, 3-pyridinyl ester, N-oxide, polymer with N-(2-hydroxy-1,1-bis(hydroxymethyl)ethyl)-2-propenamide and N,N'-methylenebis(2-propenamide)