The present invention provides a multi-input AD converter circuit capable of shorting a conversion time without increasing its layout area and current consumption. These compounds include inhibitors of protein tyrosine phosphatase that are useful in the treatment of diabetes and other PTP-1B mediated diseases, such as cancer, neurodegenerative diseases and the like. Nesting of an empty pallet is possible when the flip members are in this position. Alternatively, the nail can be constructed of a single solid piece. The fuel cell assembly further comprises an anode interconnect and a cathode interconnect, wherein the anode interconnect may be firmly attached to the anode layer by means of a bonding agent and a sealing agent used to seal passages on the anode layer of each fuel cell.