Description: Siponimod, also known as BAF-312, is a a potent and orally selective S1P Receptor Modulator with EC50 value of 0.39nM for S1P1 receptors and 0.98nM for S1P5 receptors, respectively. Development of sphingosine-1-phosphate receptor 1 (S1P1) modulators to dampen inflammation and its sequelae is becoming increasingly promising for treating medical conditions characterized by significant immunopathology.