Patent ID: 6042820
Filing Date: 2000-03-28
Classification: A61K,C08G,Y10S,Y10T

Abstract:
A biodegradable, biocompatible polymer having a molecular weight of about 5,000 to about 40,000 daltons and having the general formula: ##STR3## wherein: R.sub.1, R.sub.2, and R.sub.5 are selected independently and are selected from H, linear or branched alkyl groups;R.sub.3 and R.sub.4 are H;R.sub.6 is selected from H, an amine protecting group, a spacer molecule or a biologically active species;X is selected from an O or S group; andx and y are integers such that at least about 95% of the polymer is comprised of .alpha.-hydroxy acid residues.