2-Acrylamido-2-methylpropanesulfonic acid-acrylic acid copolymer; Acrylic Acid-2-Acrylamido-2-MeJSylpropane Sulfonic Acid Copolymer (AA/AMPS); Acrylic Acid-2-Acrylic AMide-2-Methyl Propane Sulfonate-AMps CopolyMer; ACRYLIC ACID/ APSA COPOLYMER/HPA TERPOLYMER (AA/APSA/HPA); prop-2-enoic acid,2-(prop-2-enoylamino)butane-2-sulfonic acid; 2-acrylamido-2-methylpropanesulfonic acid-acrylic acid; 2-(1-oxoprop-2-enylamino)-2-butanesulfonic acid; 2-acrylamido-2-methylpropanesulfonic acid-acrylic acid copolymer; 2-Propenoic acid polymer with 2-methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid CAS NO:40623-75-4