FIELD: chemistry.
SUBSTANCE: invention relates to crystallic hydrate of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridine-2-one of example В1, to method for preparation thereof, to anhydrous crystalline forms of 3-(2-cyanophenyl)-5-(2-pyridyl)-1-phenyl-1,2-dihydropyridine-2-one of examples D1, С1, Е1, as well as to pharmaceutical composition. Technical effect - easy commercial preparation of 3-(2-cyanophenyl)-5-(2-pyridyl-1-phenyl-1,2-dihydropyridine-2-one as a homogeneous crystalline form, which is an АМРА receptor antagonist and/or kainate receptor inhibitor.
EFFECT: facilitation of dyhydropyridine preparation.
26 cl, 9 ex, 11 tbl
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