Dichloromaleic anhydride1122-17-4100 % similar Dimethylmaleic anhydride766-39-240 % similar Chloranil118-75-239 % similar O-Chloranil2435-53-237 % similar 3,4,5,6-Tetrahydrophthalic anhydride2426-02-036 % similar Methyl 2-chloroacrylate80-63-736 % similar 2,3-Dihydro-1,4-dithiino[2,3-C]furan-5,7-dione10489-75-535 % similar Methacrylic anhydride760-93-035 % similar Methyl oxalyl chloride5781-53-333 % similar Chloranilic acid87-88-730 % similar