Halide-free glucosamine phosphate compositions and methods of preparation
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United States of America Patent
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Jun 17, 2008
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N/A
app pub date -
Sep 9, 2005
filing date -
Sep 17, 2004
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Expired
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Abstract
Glucosamine phosphate having a purity of at least about 99 wt. %, and a maximum halide content of about 0.01 wt. %. Preferably, the glucosamine phosphate is stabilized by coating it with at least one pharmaceutically acceptable polymer comprising a water-soluble, water-immiscible and/or water-swellable homopolymer and/or copolymer. Suitable polymers include carboxypolymethylene hompolymers and copolymers; polyethylene glycol homopolymers and copolymers; polypropylene glycol homopolymers and copolymers; ethylcellulose; povidone homopolymers and copolymers; polyacrylic acid homopolymers and copolymers; polyacrylamide homopolymers and copolymers; polysaccharides; and mixtures of two or more of the foregoing polymers. The resultant coated glucosamine phosphate composition will be stable at ambient temperatures and upon exposure to the atmosphere.
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