| 摘要 |
The present invention relates to compounds and compositions of formula I, which are unsymmetrical aromatic ether diacids, and polymers formed from the same. [R′—(Y)p—O]q—Ar—[O—(X)r—R′]s  I The compounds are expected to be useful in a variety of medical and/or cosmetics applications. Polymers formed from the functionalized unsymmetrical aromatic ether diacids are expected to have controllable degradation profiles, enabling them to release an active component over a desired time range.
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