Palmitoyl L-Ascorbic Acid

Description, identification, specifications, and tests of L-ascorbic acid and sodium L-ascorbate are given in the U.S. Pharmacopoeia 15) and the Food Chemicals Codex 16). Similar information on palmitoyl L-ascorbic acid (ascorbyl palmitate) is contained in the Codex. Sodium ascorbate is twice as soluble in water as ascorbic acid. Ascorbyl palmitate is soluble in ethanol (25°C) at 12.5%, in hot (80°C) glycerin, propylene glycol, or decaglycerol octaoleate to 10%, in vegetable oils (25°C) at 0.01--0.1% and in water (70°C) at 0.2%. 

The phosphoramidites 37 and 38 have been prepared and were converted into phosphate esters by condensing with alcohols (including some carbohydrate derivatives) and oxidation. The synthesis of 6-0-palmitoyl-L-ascorbic acid was achieved in a non-aqueous medium with an immobilized lipase from Candida antartica, while use of palmitoyl chloride on L-ascorbic acid gave the same product. ... 

Synonyms L-Ascorbic acid, 6-hexadecanoate Ascorbic acid palmitate L-Ascorbic acid palmitate L-Ascorbic acid 6-palmitate 6-0-Palmitoylascorbic acid Palmitoyl L-ascorbic acid Definition Ester of ascorbic acid and palmitic acid Empiricai C22H38O7... 

De Ritter, E., Cohen, N. and Rubin, S.H. (1951) Physiological availability of dehydro-1-ascorbic acid and palmitoyl-l-ascorbic acid. Science 113, 628-631. 

In order to study more real water borne and solvent based paint systems, besides ascorbic acid (AsA), 6-0-palmitoyl-L-ascorbic acid (AsAp) has also been used as a reducing agent. This latter derivative is, in contrast to L-ascorbic acid, easily soluble in solvent based systems. 

Uses Antistat for polyolefins surface coating for EPS fabric softener coemulsifier Palmitic sucrose ester. See Sucrose palmitate Palmitoyl animal collagen amino acids. See Palmitoyl collagen amino acids 6-0>Palmitoylascorbic acid PalmKoyl L-ascorbic acid. See Ascorbyl palmitate Palmitoyl collagen amino acids Synonyms Palmitoyl animal collagen amino acids Classification Protein... 

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