Not Less Than - 95%
1-[3-(Dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-3-oxo-5-isobenzofurancarbonitrile; (1RS)-1-[3-(Dimethylamino)propyl]-1-(4-fluorophenyl)-3-oxo-1,3-dihydroisobenzofuran-5- carbonitrile