RO5263397 is a TAAR1 specific agonist with oral activity that has been used in antidepressant studies. It has also been found to act as an inhibitor of the enzyme cyclooxygenase-2 (COX-2), which is involved in the synthesis of prostaglandins.

Dosing at the mid-light phase (ZT6)(RO5263397) increased wake time at 0.3 and 1 mg/kg. RO5263397 ecreases NREM time in WT mice. RO5263397 (0.3 and 1.0 mg/kg; p.o.; in OE mice) powerfully increases W time in OE mice for 5-6 h. NREM sleep is suppressed for 4-6 h and REM sleep is almost completely suppressed for 6 h after all doses of RO5263397[3].