Opioid Receptor Antagonist

Naloxone hydrochloride is an orally active opioid receptor antagonist. Naloxone hydrochloride attenuates spinal cord stimulation‑associated anti‑hyperalgesic effects, antagonizes physiologic effects of endogenous opioid peptides linked to central nervous system injury sequelae, functions as a pressor agent to induce modest elevations in mean arterial blood pressure, exerts neuroprotective effects to improve post‑traumatic neurologic motor function, blocks opioid receptor‑mediated amnesic pathways, enhances memory consolidation, reverses Adrenocorticotropic hormone (ACTH) (HY-106373)- and epinephrine‑induced amnesia, and potentiates the memory‑facilitatory effects of ACTH and epinephrine.

Naloxone hydrochloride is an orally active opioid receptor antagonist. Naloxone hydrochloride attenuates spinal cord stimulation‑associated anti‑hyperalgesic effects, antagonizes physiologic effects of endogenous opioid peptides linked to central nervous system injury sequelae, functions as a pressor agent to induce modest elevations in mean arterial blood pressure, exerts neuroprotective effects to improve post‑traumatic neurologic motor function, blocks opioid receptor‑mediated amnesic pathways, enhances memory consolidation, reverses Adrenocorticotropic hormone (ACTH) (HY-106373)‑ and epinephrine‑induced amnesia, and potentiates the memory‑facilitatory effects of ACTH and epinephrine.

JDTic (dihydrochloride) is a potent antagonist of kappa-opioid receptors (KOR), blocking the κ-agonist U50, 488-induced antinociception.

Naltriben mesylate is a potent δ2-opioid receptor antagonist and a TRPM7 activator. Naltriben mesylate shows K_i values of 0.013 nM, 19 nM and 152 nM for δ, μ and κ receptors, respectively. Naltriben mesylate enhances glioblastoma cell migration and invasion. Naltriben mesylate can be used in research into neurological diseases and cancer.

Naloxegol oxalate (NKTR-118 oxalate; AZ-13337019 oxalate) is an orally active peripherally acting μ-opioid receptor antagonist with a target K_i of 7.42 nM. Naloxegol oxalate inhibits the binding of opioids to μ-opioid receptors in the gastrointestinal tract, and alleviates opioid-induced gastrointestinal hypomotility, delayed transit, hypertonicity, and increased fluid reabsorption. Naloxegol oxalate is applicable to research related to opioid-induced constipation.

Alvimopan (ADL 8-2698) is a potent, selective, orally active and reversible μ-opioid receptor antagonist, with an IC₅₀ of 1.7 nM. Alvimopan has selectivity for μ-opioid receptor (K_i=0.47 nM) over κ- and δ-opioid receptors (K_is=100, 12 nM, respectively). Alvimopan can be used for the research of postoperative ileus.

Naloxone methiodide is a peripherally restricted, nonselective, and competitive opioid receptor antagonist. Naloxone methiodide does not penetrate the blood-brain barrier.

(+)-N-Allylnormetazocine ((+)-SKF 10047) hydrochloride is a benzomorphan opioid with psychotomi metic effects. (+)-N-Allylnormetazocine hydrochloride is an opioid receptor antagonist with K_i values of 300 nM and 27 μM for σ1 and σ2 opioid receptors, respectively. (+)-N-Allylnormetazocine hydrochloride can be used for the research of neurological disease.

Naloxone (hydrochloride) (Standard) is the analytical standard of Naloxone (hydrochloride) (HY-17417). This product is intended for research and analytical applications. Naloxone hydrochloride is an orally active opioid receptor antagonist. Naloxone hydrochloride attenuates spinal cord stimulation‑associated anti‑hyperalgesic effects, antagonizes physiologic effects of endogenous opioid peptides linked to central nervous system injury sequelae, functions as a pressor agent to induce modest elevations in mean arterial blood pressure, exerts neuroprotective effects to improve post‑traumatic neurologic motor function, blocks opioid receptor‑mediated amnesic pathways, enhances memory consolidation, reverses Adrenocorticotropic hormone (ACTH) (HY-106373)‑ and epinephrine‑induced amnesia, and potentiates the memory‑facilitatory effects of ACTH and epinephrine.

LY2940094 (BTRX-246040) tartrate is a potent, brain penetrant, selective and orally available N/OFQ peptide (NOP) receptor antagonist with high affinity (K_i=0.105 nM) and antagonist potency (K_b=0.166 nM). LY2940094 tartrate reduces Ethanol self-administration and Ethanol seeking in animal models.

LY2795050 is a short-acting selective κ(kappa)-opioid receptor (KOR) antagonist. LY2795050 has high affinity for the KOR with K_i value of 0.72 nM. LY2795050 can be used for the research of central nervous system dysfunction.

ML 190 is a selective κ opioid receptor (KOR) antagonist with an IC₅₀ of 120 nM and an EC₅₀ of 129 nM, respectively.

Axelopran sulfate is an opioid receptor antagonist with pKi values of 9.8, 8.8 and 9.9 for human recombinant μ and δ receptors and guinea pig κ receptor, respectively.

Alvimopan metabolite hydrochloride is a peripherally restricted Opioid Receptor antagonist that inhibits the amplitude of electrically evoked contractions and spontaneous mechanical activity in guinea pig ileum.

Naltrexone-d4 is deuterium labeled Naltrexone (HY-76711). Naltrexone is an orally active, long-acting opioid receptor (opioid receptor) antagonist. Naltrexone blocks the euphoric effects of exogenous opioids and reduces alcohol craving by blocking opioid receptors (μ, κ, and δ) as well as opioid growth factor receptors. Low doses of Naltrexone are used to relieve chronic pain, treat inflammatory diseases and inhibit tumor growth, while high doses or continuous administration exert pro-inflammatory or pro-proliferative effects. Naltrexone relieves intractable pruritus caused by psoriasis, atopic dermatitis and other conditions, and its combination with Bupropion (HY-B0403) inhibits food craving, thereby reducing body weight.

6β-Naltrexol-d₃ (6β-Hydroxynaltrexone-d₃) is deuterium labeled 6β-Naltrexol. 6β-Naltrexol (6β-Hydroxynaltrexone), the primary metabolite of Naltrexone, is a peripherally selective opioid antagonist. 6β-Naltrexol selectively inhibits gastrointestinal opioid effects in human subjects and inhibits Morphine-induced slowing of gastrointestinal transit.

BMS-986124 is a μ-opioid receptor silent allosteric modulator (μ-SAMs). BMS-986124 antagonizes positive allosteric modulator effect of BMS-986122 (µ-OR PAM).

Naldemedine (S-297995) is an orally active μ-opioid receptor antagonist (PAMORA). Naldemedine shows potent binding affinities (Ki=0.34, 0.43, 0.94 nM, respectively) and antagonist activities (IC₅₀=25.57, 7.09, 16.1 nM, respectively) for recombinant human μ-, δ-, and κ- opioid receptors. Naldemedine can be used in opioid-induced constipation (OIC) research. Naldemedine is predicted to bind to 3CL^pro encoded by SARS-CoV2 genome.

Naloxegol (NKTR-118; AZ-13337019) is an orally active peripherally acting μ-opioid receptor antagonist with a target K_i of 7.42 nM. Naloxegol inhibits the binding of opioids to μ-opioid receptors in the gastrointestinal tract, and alleviates opioid-induced gastrointestinal hypomotility, delayed transit, hypertonicity, and increased fluid reabsorption. Naloxegol is applicable to research related to opioid-induced constipation.

Cyprodime is a selective μ opioid receptor (MOR) antagonist with K_is of 5.4, 244.6, and 2187 nM for μ, δ, and κ, respectively.