Cannabinol is a mildly psychoactive phytocannabinoid that acts as a low affinity partial agonist at both CB₁ and CB₂ receptors. This activity at CB₁ and CB₂ receptors constitutes interaction of CBN with the endocannabinoid system. From Wikipedia
University of Sydney researchers provide first objective evidence of cannabinol's sleep-inducing effects in rats, paving the way for potential human applications.