Vitamin B6 (Vitamin B6), also known as pyridoxine, includes pyridoxine, pyridoxal and pyridoxamine. It exists in the form of phosphate ester in the body. It is a water-soluble vitamin that is easily destroyed by light or alkali. High temperature resistance.  In 1936, it was named vitamin B6. Vitamin B6 is a colorless crystal, easily soluble in water and ethanol, stable in acid solution, and easily destroyed in alkaline solution.