Sialic acid powder and process for the preparation thereof

Details Sialic acid powder and process for the preparation thereof Sialic acid powder and process for the preparation thereof

C - Chemistry, Metallurgy

07

H

C07H 7/02 (2006.01)

Patent

CA 2138073

An amorphous sialic acid powder is disclosed. It is prepared by rapidly freezing an aqueous solution of sialic acids and freeze-drying the frozen product. It has a melting point of 131-136°C (decomposed) and exhibits no peaks inherent to crystals in differential scanning thermal analysis (at 165-200°C) and X- ray diffractiometric pattern (in the range of 5°2.theta.40°). The amorphous sialic acid powder is highly reactive and can be used as a raw material for drugs and the like.

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