Crystal modifications of (+)-catechin and pharmaceutical preparations containing them
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United States of America Patent
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May 7, 1985
Grant Date -
N/A
app pub date -
Feb 17, 1983
filing date -
Feb 24, 1982
priority date (Note) -
Expired
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Abstract
Novel crystal modifications of (+)-catechin monohydrate and of (+)-catechin anhydrate more suitable for pharmaceutical preparations for reasons of higher stability against moisture and/or light and distinguished from hitherto known modifications by unique X-ray diffraction spectra are produced by specific recrystallization and/or crystal rearrangement processes and pharmaceutical preparations comprising the novel crystal forms.
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