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AM6538

Alias: AM6538 AM 6538 AM-6538
Cat No.:V8159 Purity: ≥98%
AM6538 is a long-acting, high-affinity, pseudo-irreversible cannabinoid (CB) antagonist.
AM6538
AM6538 Chemical Structure CAS No.: 1245626-00-9
Product category: New1
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
1mg
5mg
10mg
Other Sizes
Official Supplier of:
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Product Description
AM6538 is a long-acting, high-affinity, pseudo-irreversible cannabinoid (CB) antagonist. AM6538 is a structural analog of rimonabant. AM6538 effectively evaluates the apparent efficacy of cannabinoid complete and partial agonists. AM6538 may be useful in future studies requiring a temporary reduction in cannabinoid receptor availability. AM-6538 is a reagent for click chemistry. It has Alkyne groups and could undergo CuAAc (copper-catalyzed azide-alkyne cycloaddition reaction) with compounds bearing Azide groups.
Biological Activity I Assay Protocols (From Reference)
ln Vitro
AM6538 is a cannabinoid antagonist that binds to the CB1 receptor expressed in HEK-293 cells in a wash-stable manner [1].
ln Vivo
Mice treated with AM6538 (1~10 mg/kg) do not experience the analgesic effects of cannabinoid agonists [1]. There was a partial restoration of AM4054's impact with AM6538 (10 mg/kg). All cannabis agonists' tau is dose-dependently reduced by AM6538, indicating a decrease in the number of accessible receptors. Up to seven days following therapy, AM6538 causes strong, long-lasting antagonistic effects on THC's dose-response function [1].
References

[1]. Long-Lasting In Vivo Effects of the Cannabinoid CB1 Antagonist AM6538. J Pharmacol Exp Ther. 2018;364(3):485-493.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C26H25CL2N5O4
Molecular Weight
542.413803815842
Exact Mass
541.128
CAS #
1245626-00-9
PubChem CID
46912833
Appearance
White to off-white solid powder
LogP
6.8
Hydrogen Bond Donor Count
1
Hydrogen Bond Acceptor Count
6
Rotatable Bond Count
7
Heavy Atom Count
37
Complexity
847
Defined Atom Stereocenter Count
0
InChi Key
KXXKUWQMQUYUSE-UHFFFAOYSA-N
InChi Code
InChI=1S/C26H25Cl2N5O4/c1-18-24(26(34)30-31-14-4-2-5-15-31)29-32(23-13-12-21(27)17-22(23)28)25(18)20-10-8-19(9-11-20)7-3-6-16-37-33(35)36/h8-13,17H,2,4-6,14-16H2,1H3,(H,30,34)
Chemical Name
4-[4-[2-(2,4-dichlorophenyl)-4-methyl-5-(piperidin-1-ylcarbamoyl)pyrazol-3-yl]phenyl]but-3-ynyl nitrate
Synonyms
AM6538 AM 6538 AM-6538
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO : ~180 mg/mL (~331.85 mM)
Solubility (In Vivo)
Solubility in Formulation 1: 4.5 mg/mL (8.30 mM) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), suspension solution; with sonication.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 45.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

Solubility in Formulation 2: ≥ 2.5 mg/mL (4.61 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 1.8436 mL 9.2181 mL 18.4362 mL
5 mM 0.3687 mL 1.8436 mL 3.6872 mL
10 mM 0.1844 mL 0.9218 mL 1.8436 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

Calculator

Molarity Calculator allows you to calculate the mass, volume, and/or concentration required for a solution, as detailed below:

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An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
  • Enter 350.26 in the Molecular Weight (MW) box
  • Enter 10 in the Concentration box and choose the correct unit (mM)
  • Enter 5 in the Volume box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
  • Enter 10 into the Concentration (Start) box and choose the correct unit (mM)
  • Enter 25 into the Concentration (End) box and select the correct unit (mM)
  • Enter 25 into the Volume (End) box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
Instructions to calculate molar mass (molecular weight) of a chemical compound:
  • To calculate molar mass of a chemical compound, please enter the chemical/molecular formula and click the “Calculate’ button.
Definitions of molecular mass, molecular weight, molar mass and molar weight:
  • Molecular mass (or molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
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Reconstitution Calculator allows you to calculate the volume of solvent required to reconstitute your vial.

  • Enter the mass of the reagent and the desired reconstitution concentration as well as the correct units
  • Click the “Calculate” button
  • The answer appears in the Volume (to add to vial) box
In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution 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 stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

Biological Data
  • AM6538 antagonizes the antinociceptive effects of cannabinoid agonists in mice. (A) Effects of AM4054 after 1 hour pretreatment with vehicle or 0.3–10.0 mg/kg of AM6538; (B) Effects of THC after 1 hour pretreatment with vehicle or 0.1–3.0 mg/kg of AM6538; (C) Effects of WIN 55,212 after 1 hour pretreatment with vehicle or 0.3 or 3.0 mg/kg of AM6538. Each point represents the mean of six to eight mice; vertical bars indicate ±S.E.M. Ordinates, percent of maximal antinociceptive effect; abscissae, cumulative drug dose in milligrams per kilogram.[1].Paronis CA, et al. Long-Lasting In Vivo Effects of the Cannabinoid CB1 Antagonist AM6538. J Pharmacol Exp Ther. 2018;364(3):485-493.
  • Antagonism of the antinociceptive effects of AM4054 (A) or THC (B) 1 hour after administration of vehicle (open symbols) or at different times, 1 hour to 7 days, after administration of 10 mg/kg of AM6538 in mice; other details as in Fig. 1. Data in vehicle-treated animals and 1 hour after AM6538 are replotted from Fig. 1 to facilitate comparison.[1].Paronis CA, et al. Long-Lasting In Vivo Effects of the Cannabinoid CB1 Antagonist AM6538. J Pharmacol Exp Ther. 2018;364(3):485-493.
  • Discriminative stimulus effects of AM4054 in squirrel monkeys alone or 1 hour after pretreatment with 1 or 3 mg/kg of AM6538. Each point represents the mean of three to six monkeys; vertical bars indicate ±S.E.M. Ordinates: (top) percent responding on the AM4054-associated lever; (bottom): response rates expressed as responses per second. Abscissae: cumulative drug dose in milligrams per kilogram body weight; points above “S” and “AM” show control data from saline and 0.01 mg/kg of AM4054 training cycles, respectively.[1].Paronis CA, et al. Long-Lasting In Vivo Effects of the Cannabinoid CB1 Antagonist AM6538. J Pharmacol Exp Ther. 2018;364(3):485-493.
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