A method and system enabling the trading of a futures contract for the purchase of goods or services. The apparatus includes a base member and an inflatable element carried by the base member. In some embodiments, the pure metal at the exterior surface is the same as the metallic pinning agent in the mixed-metal oxide in the interior region. The IQ values then undergo a digital-analogue conversion that generates the corresponding analogue IQ signals. More particularly, these compounds are potent and selective c-kit, bcr-abl and Flt-3 inhibitors.