1 P3F Phosphoric acid mono-(5-hydroxy-6-methyl-4-{[2-(2-trifluoromethyl-benzoylamino)-acetyl]-hydrazonomethyl}-pyridin-3-ylmethyl)ester 1.000 2 BLP (5-hydroxy-6-methyl-4-((2-(2-(2-nitrobenzamido)acetyl)hydrazinyl)methyl)pyridin-3-yl)methyl dihydrogen phosphate 0.806