Synonyms: Naphthalicanhydride, 3-nitro- (6CI,7CI,8CI);3-Nitro-1,8-naphthalenedicarboxylicanhydride;3-Nitro-1,8-naphthalic acid anhydride;3-Nitro-1,8-naphthalicanhydride;3-Nitronaphthalic anhydride;5-Nitro-1H,3H-benzo[de]isochromene-1,3-dione;NSC 32326;YY 187;5-nitro-1H,3H-benzo[de]isochromene-1,3-dione;1H,3H-naphtho[1,8-cd]pyran-1,3-dione, 5-nitro-;