1,8-Naphthyridine-3-carboxylic acid, 1,4-dihydro-1-methyl-7-(2-(5-nitro-2-furanyl)ethenyl)-4-oxo- 1-Methyl-7-(2-(5-nitro-2-furyl)vinyl)-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylate 24235-63-0 29676-95-7 Potassium 1-methyl-7-(2-(5-nitro-2-furyl)vinyl)-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylate