Orlistat (Standard) is the analytical standard of Orlistat. This product is intended for research and analytical applications. Orlistat (Tetrahydrolipstatin) is a well-known irreversible inhibitor of pancreatic and gastric lipases. Orlistat is also an inhibitor of fatty acid synthase (FASN), is used orally for long-term research of obesity[1]. Anti-atherosclerotic effect[2].