118-48-9 2H-3,1-Benzoxazine-2,4(1H)-dione 32779-11-6 4-27-00-03330 (Beilstein Handbook Reference) 4H-3,1-Benzoxazine-2,4(1H)-dione AI3-24983 Anthranilic acid, N-carboxy-, cyclic anhydride BRN 0136786 Benzoic acid, 2-(carboxyamino)-, cyclic anhydride EINECS 204-255-0 HSDB 5017 ISATOIC ACID ANHYDRIDE Isatoic anhydride N-Carboxyanthranilic anhydride NSC 104662