Acrylamide, N-antipyrinyl-2-methyl-, polymer with N-methacryloylanthranilic acid sodium salt Anthranilic acid, N-methacryloyl-, polymer with N-antipyrinyl-2-methylacrylamide, sodium salt CB3260000 N-(o-Carboxyphenyl)methacrylamide-N-antipyrinylmethacrylamide copolymer sodium salt