Sulfolipids, a class of sulphur containing lipids, constitute a biologically important group of compounds whose representatives are found in microorganisms. It is important to realize that the term sulpholipid does not refer to any chemically distinct groups of compounds, instead, it covers a wide range of chemical types; it merely indicates a particular chemical feature of the molecule, i.e., the presence of sulphur. Mammalian brain and kidney are the richest sources of sulpholipids.