Tasimelteon

Tasimelteon (BMS 214778, VEC 162) is a selective dual melatonin receptor (MT1/MT2) agonist with 2.1-4.4 times greater affinity for the MT2 receptor believed to mediate circadian rhythm phase-shifting (Ki = 0.0692 nM and Ki = 0.17 nM in NIH-3T3 and CHOeK1 cells, respectively), than for the MT1 receptor (Ki = 0.304 nM and Ki = 0.35 nM, respectively) .