1H-Indene-1,3(2H)-dione, 5,6-dimethyl-2-nitro- 49561-92-4 5,6-Dimethyl-2-nitro-1H-indene-1,3(2H)-dione 57441-90-4 Nivimedona [INN-Spanish] Nivimedone Nivimedonum [INN-Latin]