The present invention is 8-fluoro-2- {4-[(methylamino) methyl] phenyl} -1,3,4,5-tetrahydro-6H-azepino [5,4,3-cd] indole-6 -It relates to a new polymorph form of On and its manufacturing method. Such polymorphic forms can be components of pharmaceutical compositions and can be used to treat mammalian disease states mediated by poly (ADP-ribose) polymerase activity, including disease states such as cancer.
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