1 LP7 Ethyl 1,4-dihydroxy-2-oxo-1,2-dihydro-1,8-naphthyridine-3-carboxylate 1.000 2 BA5 Methyl 4-azanyl-1-oxidanyl-2-oxidanylidene-1,8-naphthyridine-3-carboxylate 0.842 3 2N9 Ethyl 4-aminoquinoline-3-carboxylate 0.700