ANALYSIS OF AMINO ACID COPOLYMER COMPOSITIONS 2009-10-22
Abstract of WO 2009129018 (A1)
Methods for analyzing, selecting characterizing or classifying compositions of a co-polymer, e.g., glatiramer acetate are described. The methods entail analysis of pyro-glutamate in the composition, and, is some methods, comparing the amount of pyro-glutamate present in a composition to a reference standard/ In some cases the methods entail treating the co-polymer with pyro-glutamate aminopeptidase to cleave N-terminal pyro-glutamate residues