Final answer:
Pyridoxal, pyridoxine, and pyridoxine are three forms of vitamin B-6.
Step-by-step explanation:
Pyridoxal, pyridoxine, and pyridoxine are three forms of vitamin B-6. The chemical name of pyridoxine is 2-methyl-3-hydroxy-4, 5-dihydroxymethyl pyridine. It exists in three forms, which are pyridoxine, pyridoxal, and pyridoxamine. Pyridoxal and pyridoxamine are active coenzyme forms of vitamin B-6.