Crystalline form of D-gulose
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United States of America Patent
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Jun 1, 1993
Issued Date -
N/A
app pub date -
Mar 24, 1992
filing date -
Feb 22, 1991
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Abstract
Free flowing, substantially pure, non-hygroscopic, crystalline .beta.-D-gulopyranose is disclosed. This crystalline form of D-gulose is characterized by a sharp melting point of 130.degree.-132.degree. C., a specific optical rotation of -40.degree. and characteristic mutarotation. A method for preparation of crystalline .beta.-D-gulopyranose from D-gulose syrup is also disclosed. This method involves dilution of the D-gulose syrup, followed by initiation of crystallization, and isolation of .beta.-D-gulopyranose crystals. Crystalline .beta.-D-gulopyranose may be used as an excipient, a chelating agent, a pharmaceutical intermediate, a cleaning agent for glass and metals, a food additive, and as an additive for detergents.
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