itamin B6 (Vitamin B6), also known as pyridoxine, which includes pyridoxine, pyridoxal and pyridoxine, exists in the form of phosphate in the body. It is a water-soluble Vitamin, which is easily damaged by light or alkali and is not resistant to high temperature. It was named vitamin B6 in 1936. Vitamin B6 is colorless crystal, soluble in water and ethanol, stable in acid, easy to destroy in alkali, pyridoxine heat resistance, pyridoxal and pyridoxine do not resist high temperature.