CAS:2420-87-3 Molecular formula:C16H6O6 Kulemera kwa Molecular:294.22 EINECS:219-342-9 Mawu ofanana ndi mawu:3,3',4,4'-Biphenyltetracarboxylic dianhydride 97%; 4,4'-Biphthalic Anhydride (yoyeretsedwa ndi sublimation); 3,3'4,4'-Biphenyl tetracarboxylic acid dianhydride(s-BPDA); S-BDPA; S-BPDA; [5,5'-bisobenzofuran] -1,1',3,3'-tetrone; [5,5'-Biisobenzofuran]-1,1',3,3'-tetrone; 5,5'-Biisobenzofuran-1,1',3,3'-tetrone