Sodium N-acetylneuraminate trihydrate

US5231177A · kind A · utility

Assignee

• MECTA CORPORATION · JP

Inventors

• Kinichi Saito · Sayama, JP
• Hideo Mizu · Saitama, JP
• Naokazu Sugiyama · Hoya, DE
• Shikoh Minagawa · Yamagata, JP
• Motoaki Goto · Tokorozawa, JP
• Kenji Abiko · Kaminoyama, JP

Key dates

• Filing date: Mar 5, 1990
• Grant date: Jul 27, 1993
• Expiry date: Mar 5, 2010

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61P11/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Sodium N-acetylneuraminate trihydrate herein provided is represented by the following formula: ##STR1## The sodium N-acetylneuraminate trihydrate can be prepared, for instance, according to a method which comprises the steps of: dissolving sodium N-acetylneuraminate in water or in a mixture of water and an organic solvent; allowing the resulting solution to stand; precipitating and separating the resulting crystals of sodium N-acetylneuraminate.trihydrate; and then drying the separated crystals. The sodium N-acetylneuraminate trihydrate has very low hygroscopicity and hence can be handled without any difficulty in the form of powder.