Table 1.
Chondroitin sulfate characteristics. Reproduced with permission from Tat, et al. [16].
| Characteristic | CS1 | CS2 | CS3 |
|---|---|---|---|
| Species | Porcine | Bovine | Bovine |
| Chondroitin sulfate content (%) | 90.4 | 96.2 | 99.9 |
| Molecular weight a (kDa) | 12.9 | 13.8 | 15.1 |
| Protein (%) | 7.4 | 3.3 | ND |
| Intrinsic viscosity (m3/kg) | 0.034 | 0.036 | 0.040 |
| Chlorides (%) | 0.70 | 0.02 | 0.34 |
| Free sulfates (%) | 0.75 | 0.05 | 0.14 |
| Oxalate (%) | 0.021 | ND | 0.01 |
| Sodium (%) | 7.10 | 6.75 | 7.05 |
| Non-sulfated chondroitin (%) | 5.9 | 5.1 | 5.7 |
| Chondroitin-4-sulfate (%) | 78.3 | 72.7 | 62.8 |
| Chondroitin-6-sulfate (%) | 15.8 | 21.3 | 31.5 |
| Chondroitin-2,6-disulfate (%) | ND | 0.4 | ND |
| Chondroitin-4,6-disulfate (%) | ND | 0.5 | ND |
a: Indicates average molecular weight. CS, chondroitin sulfate; ND, not detected.