氨气

1-[3-羟基-5-(羟基甲基)-2-甲基吡啶-4-基]-1,2,3,4-四氢异喹啉-6,7-二醇

3-hydroxy-2-methyl-5-(phosphonooxymethyl)pyridine-4-carboxylic acid

bis-(3-hydroxy-2-methyl-5-phosphonooximethyl-[4]pyridyl)-ethanedione

(5-hydroxy-6-methyl-4-oxo-1H-pyridin-3-yl)methyl dihydrogen phosphate