approximate relative amounts of the different glycosaminoglycans were : chondroitin sulphate 60 % , chondroitin 2 % , hyaluronic acid 4 % , dermatan sulphate 1 % , heparan sulphate 15 % and keratan sulphate 18 % .
C0008454
chondroitin
C0011602
dermatan sulphate