Crystalline L-carnosine zinc complex having antiulcer activity
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United States of America Patent
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Jan 1, 1991
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N/A
app pub date -
Jul 20, 1988
filing date -
Aug 10, 1987
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Expired
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Abstract
A novel crystalline L-carnosine zinc complex is produced by reacting L-carnosine, a zinc salt and an alkali metal compound in an anhydrous or hydrous polar organic solvent. The crystalline L-carnosine zinc complex substantially corresponds to the formula C.sub.9 H.sub.12 N.sub.4 O.sub.3 Zn and has physical properties clearly different from the known amorphous L-carnosine zinc complex. As compared with the amorphous complex, the crystalline complex is very low in impurity, stable to heat and moisture, and easy to filtrate, and has higher anti-ulcer activity.
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