4-[(5,6-Diphenyl-2-pyrazinyl)(1-methylethyl)amino]-1-butanol is a diphenylpyrazine derivative which belongs to a class of prostacyclin receptor agonists. It is an impurity of Selexipag (S253150) that is a potential drug for the treatment of various vascular disorders such as pulmonary arterial hypertension and arteriosclerosis obliterans.
