CRYSTALLINE (8S,9R)-5-FLUORO-8-(4-FLUOROPHENYL)-9-(1-METHYL-1H-1,2,4-TRIAZOLE-5-YL)-8,9-DIHYDRO-2H-PYRIDO4,3,2-DEPHTHALAZINE-3(7H)-ON TOSYLATE

摘要

To provide a cancer treatment agent having inhibitory effect on enzymatic activity of poly(ADP-ribose)polymerase (PARP) protein family.SOLUTION: There is provided tosylate of crystalline (8S,9R)-5-fluoro-8-(4-fluorophenyl)-9-(1-methyl-1H-1,2,4-triazole-5-yl)-8,9-dihydro-2H-pyrido[4,3,2-de]phthalazine-3(7H)-on. The salt exhibits an X ray powder diffraction pattern including peaks of 2θ angle±0.2 of 7.5, 20.1 and 24.1, the X ray powder diffraction pattern including peaks of 2θ angle±0.2 of 7.5, 15.1, 18.1, 20.1, 20.5, 22.6 and 24.1, and solidCNMR spectrum having peaks of 143.2, 136.0, 131.8, 123.9, 112.2, 105.2 and 100.3 ppm±0.2 ppm.SELECTED DRAWING: None