CAS:2420-87-3 : kuv Molecular Formula:C16H6O6 Molecular Luj:294.22 Nws EINECS:219-342-9 ib Synonyms:3,3',4,4'-Biphenyltetracarboxylic dianhydride 97%; 4,4'-Biphthalic Anhydride (purified los ntawm sublimation); 3,3'4,4'-Biphenyl tetracarboxylic acid dianhydride(s-BPDA); S-BDPA; S-BPDA; [5,5'-biisobenzofuran]-1,1',3,3'-tetrone; [5,5'-Bisobenzofuran]-1,1',3,3'-tetrone; 5,5'-Bisobenzofuran-1,1',3,3'-tetrone