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Alvimopan

Name: Alvimopan
Brand: Selleck Chemicals
SKU: S5935

Synonyms: LY 246736, ADL 8-2698

Catalog No.S5935 Purity: 99.64%

Alvimopan (LY 246736, ADL 8-2698) is a potent, relatively nonselective opioid antagonist with Ki values of 0.77, 4.4, and 40 nM for the μ, δ, and κ opioid receptors, respectively, displaying >100-fold selectivity over other aminergic G-protein-coupled receptors.

Alvimopan Chemical Structure

CAS: 156053-89-3

Purity & Quality Control

Batch: Purity: 99.64%

99.64

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Biological Activity

Description

Targets

μ-opioid receptor ^[1] (Cell-free assay)	δ-opioid receptor ^[1] (Cell-free assay)	δ-opioid receptor ^[1] (Cell-free assay)	κ-opioid receptor ^[1] (Cell-free assay)
0.77 nM(Ki)	4.4 nM	4.4 nM(Ki)	40 nM(Ki)

In vitro
In vitro	Alvimopan is highly selective (by ≥227-fold) for the human μ receptor over the κ subtype, but has a more modest (≥6-fold) μ/δ receptor selectivity. In the guinea pig isolated ileum, alvimopan is a potent antagonist of morphine, DAMGO or endomorphin-1-induced, and μ opioid receptor-mediated, inhibition of electrically-evoked contractions (pA2 values of 9.6 or 9.7). The δ and κ antagonist potencies of alvimopan are lower in the guinea pig ileum (pA2 values of 8.7 and 7.8, respectively). Alvimopan (1 or 10 μM) has no significant affinity for a broad range of non-opioid receptors, ion channels and enzymes at which it has been tested^[2].

In Vivo
In vivo	In animals, alvimopan antagonizes centrally mediated, morphine-induced analgesia only at relatively high doses, with very high plasma concentrations needed to cross the blood-brain barrier. After intravenous administration, alvimopan is approximately 200-times more potent at blocking peripheral verses central μ-receptors. After oral administration, alvimopan is also highly active. In dogs, intravenous administration of alvimopan provided dose-dependent increases in peak plasma concentrations and plasma area under the concentration-time curve. However, as a result of poor systemic absorption, oral doses up to 100 mg/kg produced low plasma concentrations (mean Cmax =92.9 ng/ml), which resulted in an oral bioavailability of approximately 0.03%. The half-life of alvimopan is estimated to be approximately 10 min after intravenous administration in dogs and rabbits^[1].

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
Clinical Trial Information (data from https://clinicaltrials.gov, updated on 2024-01-11)
NCT03068975	Terminated	Post Operative Ileus	University of Puerto Rico\|Merck Sharp & Dohme LLC	September 1 2017	Phase 4
NCT00259922	Completed	Bowel Dysfunction\|Constipation	Cubist Pharmaceuticals LLC a subsidiary of Merck & Co. Inc. (Rahway New Jersey USA)\|GlaxoSmithKline	August 2005	Phase 3
NCT00256932	Completed	Bowel Dysfunction\|Constipation	Cubist Pharmaceuticals LLC a subsidiary of Merck & Co. Inc. (Rahway New Jersey USA)\|GlaxoSmithKline	August 2005	Phase 3
NCT00241722	Completed	Bowel Dysfunction\|Constipation	Cubist Pharmaceuticals LLC a subsidiary of Merck & Co. Inc. (Rahway New Jersey USA)\|GlaxoSmithKline	August 1 2005	Phase 3

References

Chemical lnformation & Solubility

Molecular Weight	424.53	Formula	C₂₅H₃₂N₂O₄
CAS No.	156053-89-3	SDF	--
Smiles	CC1CN(CCC1(C)C2=CC(=CC=C2)O)CC(CC3=CC=CC=C3)C(=O)NCC(=O)O
Storage (From the date of receipt)	3 years -20°C powder	Storage of Stock Solutions Aliquot the stock solutions to avoid repeated freeze-thaw cycles	1 year-80°Cin solvent
Storage (From the date of receipt)	3 years -20°C powder		1 month-20°Cin solvent

In vitro
Batch:

DMSO : 85 mg/mL ( (200.22 mM)； Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molecular Weight Calculator

In vivo
Batch:

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In vivo Formulation Calculator

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In vivo Formulation Calculator (Clear solution)

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Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

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Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

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