[CAS NO. 183232-66-8]  AM251

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PRODUCTS SPECIFICATIONS [183232-66-8]

Catalog
HY-15443
Brand
MCE
CAS
183232-66-8

DESCRIPTION [183232-66-8]

Overview

MDL-
Molecular Weight555.24
Molecular FormulaC22H21Cl2IN4O
SMILESO=C(C1=NN(C2=CC=C(Cl)C=C2Cl)C(C3=CC=C(I)C=C3)=C1C)NN4CCCCC4

For research use only. We do not sell to patients.


Summary

AM251 is a selective cannabinoid 1 ( CB1 ) receptor antagonist with an IC 50 of 8 nM. AM251 also acts as a potent GPR55 agonist with an EC 50 of 39 nM [1] [2] [3] .


IC50 & Target

IC50: 8 nM (CB1 receptor) [1]


In Vitro

AM251 is a CB1 receptor antagonist/inverse agonist. AM251 produces an agonist response in HEK293 cells, similar to that found in the yeast expression system [2] .
AM-251 reduces cholesteryl ester synthesis in unstimulated and acetylated LDL-stimulated Raw 264.7 macrophages, CB2 +/+ and CB2 -/- peritoneal macrophages [3] .

MCE has not independently confirmed the accuracy of these methods. They are for reference only.


In Vivo

The CB1 antagonist AM251 (3 mg/kg, i.p.) decreases capsaicin-evoked nocifensive behavior. This suppressive effect is genotype dependent, and the interaction between the effects of genotype and AM251 approached significance. Planned comparisons reveal that AM251 reduces nocifensive behaviors in fatty-acid amide hydrolase (FAAH) KO mice (p<0.01) but fails to alter nocifensive behavior in WT mice (p>0.2) relative to their respective vehicle controls. AM251 (3 mg/kg, i.p.) reduces the duration of heat hypersensitivity in FAAH KO (F 1,9 =21.43, p<0.01) but not WT mice (p>0.3). AM251 suppresses capsaicin-evoked heat hypersensitivity in a time-dependent manner in FAAH KO (F 5,9 =4.349, p<0.01) but not in WT mice (p>0.3). Post-hoc analysis reveals that FAAH KO mice receiving vehicle (i.p.) display heightened thermal hypersensitivity at 30 (p<0.05), 60 (p<0.05), and 90 (p<0.001) minutes post-capsaicin in comparison to FAAH KO animals receiving AM251) [4] .
One-way ANOVA shows that AM251 (AM-251) injected into the rats significantly decreases both of the percentage of entries in the open arms and time spent in the open arms, compare to controls. The Tukey-Kramer test analysis reveals a significant reduction for the doses of 1 mg/kg (P<0.05) and 5 mg/kg (P<0.01) compare to control rats in the time spent in the open arms. Also, AM251 significantly decreases percentage of entries in the open arms for the doses of 1 and 5 mg/kg (P<0.05) [5] .

MCE has not independently confirmed the accuracy of these methods. They are for reference only.


Appearance

Solid


Shipping

Room temperature in continental US; may vary elsewhere.


Storage

Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month

Solvent & Solubility

In Vitro:

DMSO : 25 mg/mL ( 45.03 mM ; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 1.8010 mL 9.0051 mL 18.0102 mL
5 mM 0.3602 mL 1.8010 mL 3.6020 mL
10 mM 0.1801 mL 0.9005 mL 1.8010 mL
* Please refer to the solubility information to select the appropriate solvent.
In Vivo:
  • 1.

    Add each solvent one by one: 10% DMSO >> 40% PEG300 >> 5% Tween-80 >> 45% saline

    Solubility: ≥ 2.5 mg/mL (4.50 mM); Clear solution

  • 2.

    Add each solvent one by one: 10% DMSO >> 90% corn oil

    Solubility: ≥ 2.5 mg/mL (4.50 mM); Clear solution

* All of the co-solvents are available by MCE.


Synonyms

1H-Pyrazole-3-carboxamide, 1-(2,4-dichlorophenyl)-5-(4-iodophenyl)-4-methyl-N-1-piperidinyl-
1-(2,4-Dichlorophenyl)-5-(4-iodophenyl)-4-methyl-N-1-piperidinyl-1H-pyrazole-3-carboxamide
AM 251
AM 251 (pharmaceutical)
1-(2,4-Dichlorophenyl)-5-(4-iodophenyl)-4-methyl-N-piperidin-1-ylpyrazole-3-carboxamide