Ezetimibe Hydroxy Glucuronide(CAT: R008140) is the active metabolite of ezetimibe, a cholesterol absorption inhibitor used to treat hyperlipidemia. Formed through glucuronidation of ezetimibe in the liver and intestinal wall, this metabolite retains potent activity by selectively inhibiting the Niemann-Pick C1-Like 1 (NPC1L1) transporter in the small intestine. This action blocks dietary and biliary cholesterol uptake without affecting the absorption of triglycerides or fat-soluble vitamins. Ezetimibe hydroxy glucuronide is primarily responsible for the therapeutic effects of ezetimibe, circulating systemically and contributing to its long half-life. It is a key molecule in cardiovascular and lipid metabolism research.