Fmoc-N-methyl-L-alloisoleucine is a biochemical reagent for biosynthesis.

Sitsirikine 是一种长春花生物碱。

[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.