| Lactobionic acid[1] | |
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(2R,3R,4R)-2,3,5,6-tetrahydroxy-4-[ [(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)-2-tetrahydropyranyl]oxy]hexanoic acid |
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Other names
Galactosylgluconic acid |
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| Identifiers | |
| CAS number | 96-82-2 |
| PubChem | 16219560 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | C12H22O12 |
| Molar mass | 358.29588 |
| Appearance | Syrup |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Lactobionic acid, 4-O-β-galactopyranosyl-D-gluconic acid contains gluconic acid and galactose and can be formed by oxidation of lactose, a disaccharide. The carboxylate anion of lactobionic acid is known as lactobionate.
As an acid, lactobionic acid can form salts with mineral cations such as calcium, potassium, sodium and zinc. Calcium lactobionate is a food additive used as a stabilizer. Potassium lactibionate is added to organ preservation solutions such as Viaspan to provide osmotic support and prevent cell swelling. Mineral salts of lactobionic acid are also used for mineral supplementation.
Lactobionic acid is also used in the cosmetics industry as an antioxidant,[2] and in the pharmaceutical industry as a salt form; for example, the antibiotic erythromycin is used as the salt erythromycin lactobionate when intravenously delivered.