Chondroitin sulfate is used in a wide variety of areas of research such as bioengineering. Chondroitin sulfate may be used as a biomaterial copolymer or surface derivatization reagent in the development of drug delivery vehicles, tissue engineering devices and bioscaffolds. Chondroitin sulfate may be used for the development of biocompatible structures such as hydrogels, sponges, biofilms, microspheres and micelles. Used in the treatment of coronary atherosclerosis, myocardial ischemia, myocardial infraction. Chondroitin sulfate is a sulfated (in different positions) glycosaminoglycan (GAG), composed of repeating and alternating disaccharide units of D-glucuronic acid and N-acetylgalactosamine. Depending on the position of sulfate, Chondroitin sulfate is named as chondroitin sulfate A (sulfate on carbon 4 of the N-acetylgalactosamine (GalNAc) sugar, C (carbon 6 of the GalNAc sugar), D (carbon 2 of the glucuronic acid and 6 of the GalNAc sugar) and E (carbons 4 and 6 of the GalNAc sugar). The CAS # given is the representation of core component of this product.