A thin cast strip is formed having at least one microstructure selected from the group consisting of polygonal ferrite, acicular ferrite, Widmanstatten, bainite and martinsite, a surface roughness of less than 1. The controllers 105 are adapted to transfer data between a data storage system 120 and at least one host computer 110 in response to instructions therefrom. The salts and polymorphs are useful for the treatment or prevention of conditions and disorders associated with energy homeostasis such as type II diabetes, lipid metabolism, adipocyte differentiation and inflammation.