FIELD: biochemistry.
SUBSTANCE: present invention relates to (6aR,9aS)-5,6a,7,8,9,9a-hexahydro-5-methyl-3-(phenylamino)-2-((4-(6-fluoropyridin-2-yl)phenyl)methyl)cyclopenta[4,5]imidazo[1,2-a]pyrazolo[4,3-e]pyrimidin-4(2H)-one in the form of an acid addition salt of monophosphate, in particular to the crystals of such a salt. Invention also relates to a composition comprising said crystals, and a process for preparing crystals of such a salt and the use of such a salt.
EFFECT: technical result is the preparation of a stable acid-addition salt, suitable for the manufacture of galenic preparations.
26 cl, 5 dwg, 7 ex, 7 tbl
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