A derivative of piperine; a TRPV1 agonist (EC50 = 6.3 μM); inhibits rat hepatic microsomal AHH (IC50 = 23 μM) and MOCD activity in rat liver microsomes (IC50 = 25 μM); increases skin pigmentation in a mouse model of vitiligo when 100 μl of a 175 mM solution is administered topically