1 X04 (2-amino-4-formyl-5-hydroxy-6-methylpyridin-3-yl)methyl dihydrogen phosphate 1.000 2 PLP Pyridoxal-5'-phosphate 0.941 3 PXP Pyridoxine-5'-phosphate 0.941 4 EM2 (6-ethynyl-4-methanoyl-5-oxidanyl-pyridin-3-yl)methyl dihydrogen phosphate 0.889 5 MPL N-methyl-pyridoxal-5'-phosphate 0.889 6 NOP Pyridoxal-5'-phosphate-N-oxide 0.889 7 P0P [4-(dihydroxymethyl)-5-hydroxy-6-methylpyridin-3-yl]methyl dihydrogen phosphate 0.889 8 PLR (5-hydroxy-4,6-dimethylpyridin-3-yl)methyl dihydrogen phosphate 0.882 9 PMP 4'-deoxy-4'-aminopyridoxal-5'-phosphate 0.833 10 PZP [5-hydroxy-4-(iminomethyl)-6-methyl-pyridin-3-yl]methyl dihydrogen phosphate 0.833 11 UAH (5-hydroxy-6-methylpyridin-3-yl)methyl dihydrogen phosphate 0.824 12 GT1 [5-hydroxy-4-(methoxymethyl)-6-methylpyridin-3-yl]methyl dihydrogen phosphate 0.789 13 NPL N-methyl-4-deoxy-4-amino-pyridoxal-5-phosphate 0.789 14 EOW (6-but-3-ynyl-4-methyl-5-oxidanyl-pyridin-3-yl)methyl dihydrogen phosphate 0.750 15 MP5 (4-amino-2-methylpyrimidin-5-yl)methyl dihydrogen phosphate 0.722