Antagonists of the opioid receptors.

Opioid receptor modulators

μ-opioid
(MOR)

Agonists
(abridged;
full list)

Antagonists

δ-opioid
(DOR)

Agonists

Antagonists

κ-opioid
(KOR)

Agonists

Antagonists

Nociceptin
(NOP)

Agonists

Antagonists

(Nphe¹)Nociceptin(1-13)NH₂
AT-076
BAN-ORL-24
BTRX-246040 (LY-2940094)
J-113,397
JTC-801
NalBzOH
Nociceptin (1-7)
Nocistatin
SB-612,111
SR-16430
Thienorphine
Trap-101
UFP-101

Others

Propeptides: β-Lipotropin (proendorphin)
Prodynorphin
Proenkephalin
Pronociceptin
Proopiomelanocortin (POMC)

Others: Kyotorphin (met-enkephalin releaser/degradation stabilizer)

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