1-(4-{5-[(benzylamino)methyl]-1-[(2,6-difluorophenyl)methyl]-2,4-dioxo-3-phenyl-1H,2H,3H,4H-thieno[2,3-d]pyrimidin-6-yl}phenyl)-3-methoxyurea 以14%的产率得到1-[4-[5-[(Benzylamino)methyl]-1-[(2,6-difluorophenyl)methyl]-2,4-dioxo-3-phenylthieno[2,3-d]pyrimidin-6-yl]phenyl]-3-methoxyurea;hydrochloride