| http://www.w3.org/ns/prov#value | - 008] In a second aspect, the invention features a compound the formula: D-Y???C(O)???(CH2)n???S???(CH2)2???COX???P, D-Y???C(O)???(CH2)n???NH???(CH2)2???COX???P, D-Y???C(O)???(CH2)n???NH???U???P, or D-Y???C(O)???(CH2)n???S???U???P [0009] wherein D is a pharmaceutically active moiety or a binding moiety; n is 1, 2, or 3; X is N or O; P is a water-soluble polymer or a water swellable polymer having o
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