1 AN7 (3e)-4-{3-hydroxy-2-methyl-5-[(phosphonooxy)methyl]pyridin-4-yl}-2-oxobut-3-enoic acid 1.000 2 FOO (3e)-4-{3-hydroxy-2-methyl-5-[(phosphonooxy)methyl]pyridin-4-yl}-2-iminobut-3-enoic acid 0.909 3 5NJ 6-[2-methyl-3-oxidanyl-5-(phosphonooxymethyl)pyridin-4-yl]-4-oxidanylidene-hexanoic acid 0.760 4 PLR (5-hydroxy-4,6-dimethylpyridin-3-yl)methyl dihydrogen phosphate 0.714 5 PFM 1-amino-7-(2-methyl-3-oxido-5-((phosphonoxy)methyl)-4-pyridoxal-5-oxo-6-heptenate 0.704