Patent ID: 7456267

Claim:
An N-acylated chitinous polymer, wherein said chitinous polymer is comprised of subunits of the formula: wherein X is independently selected from hydrogen, —(CH 2 ) b COG, or —(CH 2 ) b COOZ for each occurrence, provided that at least 10% of X groups on said polymer are —(CH 2 ) b COOZ or —(CH 2 ) b COG; Y is independently selected from —C(═O)—R—CO 2 Z, —C(═O)—R—COG, hydrogen, carboxyalkyl, acetyl, or a pharmaceutically acceptable salt thereof for each occurrence, provided that at least 1% of Y groups on said polymer are —C(═O)—R—CO 2 Z or —C(═O)—R—COG; R is aryl; b is 1-8; G is an agent or a pharmaceutically acceptable salt thereof; and Z is hydrogen, a cation, an agent, or a pharmaceutically acceptable salt thereof.