Morusinol is a flavonoid extracted from the root bark of Morus alba.

N1,N5,N10-(E)-tri-p-coumaroylspermidine shows free radical-scavenging activity.

[Met5]-Enkephalin, amide is an agonist for δ opioid receptors as well as putative ζ (zeta) opioid receptors.Met-enkephalin circulates in several forms, some of which may be derived from proteins other than proenkephalin A, and plasma levels of both free native, and peptidase-derivable Met-enkephalin are modulated physiologically.