FIELD: chemistry.
SUBSTANCE: invention relates to a crystalline tosylate salt of (8S,9R)-5-fluoro-8-(4-fluorophenyl)-9-(1-methyl-1H-1,2,4-triazol-5-yl)-8,9-dihydro-2H-pyrido[4,3,2-de]phthalazin-3(7H)-one, containing crystalline forms and methods for production thereof. Invention also relates to a pharmaceutical composition containing crystalline tosylate salt (8S,9R)-5-fluoro-8-(4-fluorophenyl)-9-(1-methyl-1H-1,2,4-triazol-5-yl)-8,9-dihydro-2H-pyrido[4,3,2-de]phthalazin-3(7H)-one, and to use of crystalline tosylate salt of (8S,9R)-5-fluoro-8-(4-fluorophenyl)-9-(1-methyl-1H-1,2,4-triazol-5-yl)-8,9-dihydro-2H-pyrido[4,3,2-de]phthalazin-3(7H)-one derivatives in treating a disease or diseased condition, such as cancer.
EFFECT: obtaining a stable crystalline salt of said compound.
36 cl, 19 dwg, 29 tbl, 3 ex
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