The present invention provides compounds of Formula Iand the pharmaceutically acceptable salts thereof, which are inhibitors of the ROMK channel. The vertical web of the shim device includes a bottom end, a middle portion and a top end in which the bottom of the vertical web is attached to the horizontal flange such that the vertical web is aligned substantially perpendicular to the horizontal flange. The formation system provides a user with environmental information about the products according to information on user’s attribute.