Method for preparing a glucosamine compound and compound...

Details Method for preparing a glucosamine compound and compound... Method for preparing a glucosamine compound and compound...

2002-12-02

2008-10-14

Jiang, Shaojia Anna (Department: 1623)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

C514S062000

Reexamination Certificate

active

07435812

ABSTRACT:
Method for preparing a compound comprising protonated glucosamine and Cl−, Na+and SO42−ions, in which (a) glucosamine hydrochloride and a stoichiometric excess of sodium sulphate are placed in water, (b) the mixture obtained from the preceding step (a) is heated, (c) the mixture is cooled, and (d) the solid present in the said cooled mixture is recovered by filtration. Compound comprising protonated glucosamine and Cl−, Na+and SO42−ions and having the X-ray diffraction diagram of FIG.1.

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patent: 6812223 (2004-11-01), Mukhopadhyay et al.
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patent: WO 02/43653 (2002-06-01), None
patent: WO 02/43653 (2002-06-01), None
Robert Breuer, “Ueber das freie chitosamin”, Chem. Ber., vol. 31, pp. 2193-2200 1898. Considered discussion of this at p. 1 of specification only.

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