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4-Carboxylic-isatoic anhydride77423-14-4100 % similar 4-Chloroisatoic anhydride40928-13-055 % similar 4-Nitro-isatoic anhydride63480-10-449 % similar 5-Hydroxy isatoic anhydride195986-91-548 % similar 5-Bromoisatoic anhydride4692-98-248 % similar 2-Mercapto-5-benzimidazolecarboxylic acid58089-25-145 % similar 2-Methyl-1H-1,3-benzodiazole-5-carboxylic acid709-19-345 % similar 5-Aminoisatoic anhydride169037-24-544 % similar 5-Fluoroisatonic anhydride321-69-744 % similar 6,7-Dimethoxy-2H-3,1-benzoxazine-2,4(1H)-dione20197-92-643 % similar 1H-Indole-6-carboxylic acid1670-82-243 % similar Indole-2,5-dicarboxylic acid117140-77-942 % similar 1H-Benzimidazole-5-carboxylic acid15788-16-641 % similar 1H-Indazole-6-carboxylic acid704-91-641 % similar 2,6-Naphthalenedicarboxylic acid1141-38-441 % similar 3,4-Dimethylbenzoic acid619-04-540 % similar 6-Carboxycoumarin7734-80-740 % similar 1H-Indole-5-carboxylic acid1670-81-140 % similar 3-Cyano-1H-indole-5-carboxylic acid889942-87-440 % similar 2-Amino-6-benzothiazolecarboxylic acid93-85-640 % similar