Norcantharidin29745-04-8100 % similar Norcantharidin5442-12-6100 % similar Tetrahydrocyclobuta[1,2-C:3,4-C′]difuran-1,3,4,6-tetrone4415-87-655 % similar Endothall145-73-350 % similar Tetrahydro-1H-cyclopenta[1,2-C:3,4-C′]difuran-1,3,4,6(3ah)-tetrone6053-68-548 % similar 3-Oxabicyclo[3.2.0]heptane-2,4-dione4462-96-848 % similar exo-5,6-Dehydronorcantharidin6118-51-046 % similar Carbic anhydride129-64-644 % similar Himic anhydride2746-19-244 % similar Nadic anhydride826-62-044 % similar cis-1,2-Cyclohexanedicarboxylic anhydride13149-00-344 % similar 3A,4,4A,7A,8,8A-Hexahydro-4,8-etheno-1H,3H-benzo[1,2-C:4,5-C′]difuran-1,3,5,7-tetrone1719-83-144 % similar Rel-(3ar,6as)-tetrahydro-1H-cyclopenta[C]furan-1,3(3ah)-dione35878-28-544 % similar Hexahydrophthalic anhydride85-42-744 % similar 3,4-Epoxycyclohexanecarboxylate methyl ester41088-52-241 % similar 3A,4,5,7A-Tetrahydro-6-methyl-1,3-isobenzofurandione19438-64-338 % similar Dicyclohexyl-3,4,3',4'-tetracarboxylic dianhydride122640-83-938 % similar 3,4-Epoxycyclohexylmethyl-3',4'-epoxycyclohexane carboxylate2386-87-037 % similar 1,2,3,6-Tetrahydrophthalic anhydride85-43-837 % similar Tetrahydrophthalic anhydride935-79-537 % similar