Source:http://linkedlifedata.com/resource/umls/id/C0021521
MSH: A broad class of substances encompassing all those that do not include carbon and its derivatives as their principal elements. However, carbides, carbonates, cyanides, cyanates, and carbon disulfide are included in this class.,NCI: A broad class of substances, principally from mineral sources of non-biological origin, encompassing all those that do not include carbon and its derivatives as their principal elements.