has role furans cyclic dicarboxylic anhydride maleic anhydride Dihydro-2,5-dioxofuran PMID:26073302 CAS:108-31-6 2,5-Furandione MA PMID:26328347 InChI=1S/C4H2O3/c5-3-1-2-4(6)7-3/h1-2H 98.05690 furan-2,5-dione PMID:3711550 PMID:1789402 chebi_ontology PMID:24315947 Maleic acid anhydride Beilstein:106909 CHEBI:474859 Reaxys:106909 Toxilic anhydride Gmelin:2728 0 A cyclic dicarboxylic anhydride that is the cyclic anhydride of maleic acid. cis-Butenedioic anhydride PMID:26961914 Wikipedia:Maleic_anhydride C4H2O3 FPYJFEHAWHCUMM-UHFFFAOYSA-N 98.00039 PMID:26639665 O=C1OC(=O)C=C1 allergen