Patent ID: 7956046

Claim:
An oligosaccharide mixture, wherein: the oligosaccharide mixture comprises an anti-Xa activity of from 200 IU/mg to 450 IU/mg; the oligosaccharide mixture comprises an anti-IIa activity of less than 0.2 UI/mg; the constituent oligosaccharides of the mixture have an average molecular weight of from 1800 to 2400 Daltons; the constituent oligosaccharides of the mixture comprise from 2 to 16 saccharide units; wherein: from 20% to 100% of the oligosaccharides of the mixture are hexasaccharides; from 20% to 70% of the hexasaccharides have the sequence: the constituent oligosaccharides of the mixture comprise oligosaccharides comprising a hexasaccharide of the following formula: the constituent oligosaccharides of the mixture are in the form of at least one metal salt chosen from alkali metal and alkaline-earth metal salts.