2,5-Furandione, homopolymer 224641-13-8 224641-15-0 224641-16-1 24937-72-2 Maleic acid anhydride homopolymer Maleic anhydride oligomer Maleic anhydride polymer Maleic anhydride polymer, phenyl-terminated Maleic anhydride, homopolymer Maleic anhydride, homopolymer, diphenyl terminated Maleic anhydride, polymers Poly(maleic acid anhydride) Poly(maleic anhydride) Polymaleic anhydride