1 P00 (2s)-2-azanyl-4-[(E)-[2-methyl-3-oxidanyl-5-(phosphonooxymethyl)pyridin-4-yl]methylideneamino]oxy-butanoic acid 1.000 2 OCF 3-[(~{E})-[2-methyl-3-oxidanyl-5-(phosphonooxymethyl)pyridin-4-yl]methylideneamino]oxypropanoic acid 0.769 3 IK2 4'-deoxy-4'-acetylyamino-pyridoxal-5'-phosphate 0.731