Uronic Acid Stereochemistry Determination in Chondroitin Sulfate Glycosaminoglycans

摘要

1. CID of CS precursors that have only one singly protonated acidic group produce specific ions that distinguish glucuronic and iduronic acid residues. 2. The diagnostic nature of the A_n and ~(0,2)X_n ions depends on charge and the level of sodium.