Pyromellitic dianhydride89-32-7100 % similar Diphenic anhydride6050-13-155 % similar 4,4-Oxydianiline pyromellitic dianhydride copolymer25038-81-752 % similar Urolithin A1143-70-041 % similar Ellagic acid476-66-438 % similar 5H-Dithieno[3,2-B:2',3'-D]pyran-5-one1295502-12-334 % similar Urolithin B1139-83-934 % similar N-Methylisatoic anhydride10328-92-433 % similar 5-Aminoisatoic anhydride169037-24-533 % similar 5-Hydroxy isatoic anhydride195986-91-533 % similar 5-Fluoroisatonic anhydride321-69-733 % similar 4-Chloroisatoic anhydride40928-13-033 % similar 5-Bromoisatoic anhydride4692-98-233 % similar 6,7-Dimethoxy-2H-3,1-benzoxazine-2,4(1H)-dione20197-92-632 % similar 3,3′-Di-O-methylellagic acid2239-88-532 % similar 6,8-Dimethyl-2H-3,1-benzoxazine-2,4(1H)-dione56934-87-332 % similar Isatoic anhydride118-48-932 % similar UV 363818600-59-432 % similar 2-Methyl-4H-3,1-benzoxazin-4-one525-76-832 % similar 5-Chloroisatoic anhydride4743-17-331 % similar