3772529 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3772529 > 2 > ChemIDplus > 082571559 > 2-Propenoic acid, 2-hydroxyethyl 2-methyl-, polymer with N-(1,1-dimethyl-3-oxobutyl)-2-propenamide, 2-methyl-2-propenoic acid, methyl 2-methyl-2-propenoate and 1,2-ethanediyl bis(2-methyl-2-propenoate 82571-55-9 E-40 E-50 E-52 E-60 Pentafilcon A Pentafilcon A [USAN] > 82571-55-9 > 082571559 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=082571559 $$$$