erythorbic acid

Erythorbic acid
IUPAC name	(2R)-2-[(1R)-1,2-Dihydroxyethyl]-4,5-dihydroxyfuran-3-one
Other names	D-Araboascorbic acid, Erythorbate, Isoascorbic acid, E315
Identifiers
CAS number	89-65-6 Y
PubChem	6981
SMILES	C([C@H]([C@@H]1C(=O)C(=C(O1)O)O)O)O
Properties
Molecular formula	C6H8O6
Molar mass	176.13 g/mol
Density	0.704 g/cm3
Melting point	164-172 °C (decomposes)
Acidity (pKa)	2.1
Y (what is this?)  (verify) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Erythorbic acid, formerly known as isoascorbic acid and D-araboascorbic acid, is a stereoisomer of ascorbic acid (vitamin C).^[1] It is a vegetable-derived food additive produced from sucrose. It is denoted by E number E315, and is widely used as an antioxidant in processed foods.

Clinical trials have been conducted to investigate aspects of the nutritional value of erythorbic acid. One such trial investigated the effects of erythorbic acid on vitamin C metabolism in young women; no effect on vitamin C uptake or clearance from the body was found.^[2] A later study found that erythorbic acid is a potent enhancer of nonheme-iron absorption.^[3]

See also

• Sodium erythorbate

References