Dehydroascorbic acid
Encyclopedia : D : DE : DEH : Dehydroascorbic acid
Dehydroascorbic acid (DHA) is one of oxidized forms of ascorbic acid. It is actively imported into the endoplasmic reticulum of cells and generates the oxidative potential found there. Protein disulfide isomerases are known to reduce DHA back to ascorbic acid, oxidizing their disulfide bonds in the process. Therefore L-dehydroascorbic acid is a vitamin C compound much like L-ascorbic acid. As a result of different contents of crystal water (hydrated water) there are different forms of DHA: the waterfree bis-DHA and the mono-DHA*H2O. In literature often mono-DHA without hydrate water molecule is used. Oxidized forms of esterified ascorbic acids can be numbered at C(5) or C(6) atoms and the (free) chemical radical semi-dehydroascorbate or semidehydro ascorbic acid (SDA) to the group of dehydroascorbic acids.
External links
- For a full list of external links to MSDSs, spectroscopic data, commercial chemicals suppliers etc. for this compound, see [Chemical sources].
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