1,3-Isochromandione(7CI);o-Toluic acid, a-carboxy-, cyclic anhydride (8CI);1H-Isochromene-1,3(4H)-dione;Benzeneacetic acid, 2-carboxy-, cyclic anhydride;Homophthalic acid anhydride;Homophthalic anhydride;NSC 2825;NSC 401693;
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