CAS نومۇرى:4415-87-6 MF:C8H4O6 MW:196.11 EINECS No.:224-577-5 Synonym:3a ، 3b ، 6a ، 6b-Tetrahydrocyclobuta.4,9-Dioxatricyclo [5.3.0.02,6] decane-3,5,8,10-tetrone;Cyclobutane 1,2,3,4-tetracarboxylic acid 1,2: 3,4-dianhydride;Cyclobutane-1,2,3,4-tetracarboxylic dianhydride ،% 98;Cyclobutane-1,2,3,4-tetracarboxylic acid dianhydride;Cyclobutane-1,2,3,4-tetracarboxylic acid dianhydride (CBDA);Cyclobutane-1,2,3,4-tetracarboxylic