Prepared from high quality Chondroitin Sulfate (shark origin) by partial GAG-endolyase scission and isolated by high resolution gel filtration.
∆UA - GalNAc,4S or 6S - (GlcA – GalNAc,4S or 6S)n - GlcA - GalNAc,4S or 6S
where n is number of disaccharide units
n = 0 in a tetrasaccharide (dp4)
n =1 in a hexasaccharide (dp6)
n = 2 in an octasaccharide (dp8) etc…..
Uronic acid (∆UA) at the non-reducing ends of the oligosaccharides has a C4-C5 double bond as a result of endolytic scission.
The main disaccharide repeat in the origonal chondroitin sulphate is GlcA - GalNAc sulphated at C-4 or C-6 of the GalNAc residue.