phenyl 2-bromobutanoate

5,5-bis(4-hydroxyphenyl)-3H-spiro[benzo[1,2-c:4,5-c']difuran-1,9'-xanthene]-3,7(5H)-dione

3,3,5,5-tetrakis(4-hydroxyphenyl)pyromellitide

3,3,7,7-tetrakis(4-hydroxyphenyl)pyromellitide

7,7-bis(4-hydroxyphenyl)-3H-spiro[benzo[1,2-c:4,5-c']difuran-1,9'-xanthene]-3,5(7H)-dione