Darexaban glucuronide, also known as YM-222714, is the major component in plasma after oral administration of darexaban to humans and is the pharmacologically active metabolite. Darexaban (YM150) is a direct inhibitor of factor Xa. It is an experimental drug that acts as an anticoagulant and antithrombotic to prevent venous thromboembolism after a major orthopaedic surgery, stroke in patients with atrial fibrillation and possibly ischemic events in acute coronary syndrome. It is used in form of the maleate. The development of darexaban was discontinued in September 2011.