Bupropion morpholinol-d6 is the deuterated form of Bupropion morpholinol. Bupropion morpholinol is a major metabolite of Bupropion. Bupropion morpholinol inhibits Dopamine, Norepinephrine transporters and the alpha4beta2 nicotinic receptor in vitro. Bupropion morpholinol contributes to antidepressant and smoking cessation activities[1].