Pharmaceutical compositions containing buffered ortho ester polymers
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United States of America Patent
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Aug 27, 2002
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N/A
app pub date -
Jul 27, 1998
filing date -
Mar 5, 1996
priority date (Note) -
Expired
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Abstract
A pharmaceutical composition for the controlled release of therapeutic agents from carboxylic acid ortho ester polymers contains a pharmaceutically acceptable salt of an acid, which together with the acid R1-COOH liberated from the decomposition of the ortho ester polymer forms a buffer system in a physiologically acceptable pH range.
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