2. Vitamin C, also known as Vitamin C, is a polyhydroxy compound with the chemical formula C6H8O6.
3. The structure is similar to glucose, and the two neighboring enol hydroxyl groups on the 2nd and 3rd position of the molecule are very easy to be dissociated and release H+, so it has the nature of acid, also known as L-ascorbic acid.
4. Vitamin C has a strong reducibility, easily oxidized into dehydrovitamin C, but the reaction is reversible, and ascorbic acid and dehydroascorbic acid have the same physiological function, but dehydroascorbic acid if further hydrolysis, generating diketogulonic acid, the reaction is not reversible and completely lose physiological efficacy.