Patent ID: 7943141

Claim:
A terminally activated polyoxazoline compound having the general structure R 1 —[N(COR 7 )CH 2 CH 2 ] n —S-Q q -X, wherein X is an active functional group capable of forming a hydrolytically stable linkage with a target molecule to form a target molecule-POZ conjugate wherein all the linkages between the target molecule and the POZ compound are hydrolytically stable in a biological system; Q is an optional linking group; R 1 , and is hydrogen or an unsubstituted or substituted alkyl, alkenyl or aralkyl group; R 7 is independently selected for each repeating unit from an unsubstituted or substituted alkyl, alkenyl or aralkyl group; n is an integer from 3 to 1000; and q is zero or one.