Table 1.
The structure of four HS tetrasaccharide standards used for experiments are shown using symbol notation as defined in the table.
| Sample 1 |  | 
| Sample 2 |  | 
| Sample 3 |  | 
| Sample 4 |  | 
 Hexuronic Acid
 Hexuronic Acid
 Iduronic Acid
 Iduronic Acid
 Glucoronic Acid
 Glucoronic Acid
 Glucosamine
 Glucosamine
 N-acetyl Glucosamine
 N-acetyl Glucosamine