Crystal modifications of (+)-catechin and pharmaceutical prepara

Details Crystal modifications of (+)-catechin and pharmaceutical prepara Crystal modifications of (+)-catechin and pharmaceutical prepara

1983-02-17

1985-05-07

Chan, Nicky

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Having -c-, wherein x is chalcogen, bonded directly to...

549399, 514894, A61K 3135, C07D31162

Patent

active

045158045

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.

REFERENCES:
The Merck Index, 9th ed., 1976, p. 1901.
Blum et al., Lancet, pp. 1153-1155 (1977).
Reina et al., Fortschr. Med, 96, 75 (1978).

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