Potent, selective partial agonist peptide for the NOP receptor (Ki = 0.71 nM). Selective over μ, δ and κ opioid receptors (IC50 > 4000 nM). Increases food intake in vivo.

Bilaid C is a tetrapeptide μ-opioid receptor agonist (Ki= 210 nM in HEK293 cell membranes expressing the human receptor) that has been found inPenicillium.1It inhibits forskolin-induced cAMP accumulation by 77% in HEK293 cells expressing the human μ-opioid receptor when used at a concentration of 10 μM. Bilaid C induces inward rectifying potassium channel (Kir) currents in rat locus coeruleus slices that endogenously express high levels of the μ-opioid receptor (EC50= 4.2 μM). 1.Dekan, Z., Sianati, S., Yousuf, A., et al.A tetrapeptide class of biased analgesics from an Australian fungus targets the μ-opioid receptorProc. Natl. Acad. Sci. USA116(44)22353-22358(2019)

Dynorphin B (1-13) acts as an agonist on the opioid κ-receptor.

Hemorphin-7 binds to the angiotensin IV receptor, triggering multiple effects including cellular proliferation and memory enhancement. Hemorphins are endogenous peptides belonging to the family of atypical opioid peptides released from hydrolyzed hemoglob

Naldemedine (S 297995) is a peripheral selective μ-opioid receptor antagonist being developed by Shionogi for the treatment of opioid-induced adverse reactions, including constipation, nausea, and vomiting. They are usually well tolerated, mainly with mil

Tyr-W-MIF-1 是一种阿片四肽，具有阿片和抗阿片活性。Tyr-W-MIF-1 可诱导镇痛。

SR16835 is a NOP receptor agonist, with low-affinity bifunctional activity at the μ opioid receptor.

[D-Ala2]-Met-Enkephalinamide，一种阿片类肽，有效地作为阿片受体激动剂，通过中枢机制降低胆汁流量并具有镇痛效果。

Sunobinop (S 117957) 是一种阿片受体样孤儿受体 (ORL1) 调节剂。