| abstract |
The present invention relates to a mannuronic diacid oligosaccharide composition, comprising a mannuronic diacid of Formula (III) or a pharmaceutically acceptable salt thereof, wherein n is an integer from 1 to 9, m is 0, 1 or 2, and m' is 0 or 1, and wherein the total weight of mannuronic diacids wherein n = 1-5 is 80-95% of the total weight of the composition, and the ratio of the total weight of mannuronic diacids wherein n = 1-3 to the total weight of mannuronic diacids wherein n = 4-7 is between 1.0 and 3.5. |