2-Furaldehyde, 5-nitro-, 2-[2-(dimethylamino)ethyl]semicarbazone 5580-25-6 Hydrazinecarboxamide, 1-[2-(dimethylamino)ethyl]-2-[(5-nitro-2-furanyl)methylene]- NF 189 NSC6487 Nifuramizonum Nifurethazon Nifurethazone