FIELD: chemical technology.
SUBSTANCE: invention relates to the improved method for preparing cabergolin crystalline form I. Metho involves preparing a toluene solvate of cabergolin form X and its conversion to the cabergolin crystalline form I by crystallization from mixtures toluene/heptane or toluene/hexane.
EFFECT: improved preparing method.
14 cl, 3 tbl, 2 ex
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