two-dimensional heterocorrelation and homo-correlation n.m.r . experiments have provided 1h- and 13c-chemical shift data that complete or verify ( or both ) previous information available for heparin , dermatan sulfate , and chondroitin 4- and 6-sulfates ( chondroitins a and c ) .
C0011602
dermatan sulfate
C0008454
chondroitin