| 摘要 |
1. Mixtures of sulphated polysaccharides having the general structure of the polysaccharides present in heparin, whose acid groups are in the free form or converted into a salt form, characterised in that the polysaccharides present in the said mixtures have an ethylenic double bond at one of the ends of their chain and in that, in the form of the sodium salt, the mixtures have the following characteristics : - percentage of sulphur : 9% to 13.5% - percentage of nitrogen : 1.8% to 2.5% - percentage of uronic acids : 20% to 30% - weight-average molecular weight : 2000 to 10 000 daltons - specific rotatory power in aqueous solution at 20 degrees C : [alpha]D-20 = + 25 degrees to + 55 degrees |
