1 INO 2-hydroxyisonicotinic acid N-oxide 1.000 2 D1X 2,6-dioxo-1,2,3,6-tetrahydropyridine-4-carboxylic acid 0.833 3 4HO 1-hydroxy-4-methylpyridin-2(1h)-one 0.818 4 MN1 4-carboxypiperidine 0.818 5 S3V Pyridine-4-carboxylic acid 0.818 6 3HB 3-hydroxybenzoic acid 0.750 7 3OC (1r)-3-oxocyclohexanecarboxylic acid 0.750 8 4SV 3-aminopyridine-4-carboxylic acid 0.750 9 A1L9X 4-azanylpiperidine-4-carboxylic acid 0.750 10 AO4 2-chloropyridine-4-carboxylic acid 0.750 11 TJJ 2-oxo-2,3-dihydropyrimidine-4-carboxylic acid 0.750 12 CQJ 4-methylpyridin-2-ol 0.727 13 PY7 Pyridin-4-ylmethanol 0.727