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SR144528

Cat. No. M8725
SR144528 Structure
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Biological Activity

SR144528 is a potent and highly selective cannabinoid CB2 receptor inverse agonist. SR144528 exhibited a Ki of 0.6 nM at CB2 compared to 400 nM at the related CB1 receptor.

Chemical Information
Molecular Weight 476.05
Formula C29H34ClN3O
CAS Number 192703-06-3
Solubility (25°C) DMSO: 10 mg/mL
Storage Powder          -20°C   3 years ;  4°C   2 years
In solvent       -80°C   6 months ;  -20°C   1 month
Conversion of different model animals based on BSA (PMID: 27057123)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.

References

[1] Dragos Apostu, et al. Cannabinoids and bone regeneration

[2] Evangelia Kotsikorou, et al. The importance of hydrogen bonding and aromatic stacking to the affinity and efficacy of cannabinoid receptor CB2 antagonist, 5-(4-chloro-3-methylphenyl)-1-[(4-methylphenyl)methyl]-N-[(1S,2S,4R)-1,3,3-trimethylbicyclo[2.2.1]hept-2-yl]-1H-pyrazole-3-carbox䲧畸Ỵ畹㧀畷羹皖

[3] Douglas Thewke, et al. AM-251 and SR144528 are acyl CoA:cholesterol acyltransferase inhibitors

[4] Eszter Pldy, et al. CB(2) cannabinoid receptor antagonist SR144528 decreases mu-opioid receptor expression and activation in mouse brainstem: role of CB(2) receptor in pain

[5] G Griffin, et al. Evaluation of the cannabinoid CB2 receptor-selective antagonist, SR144528: further evidence for cannabinoid CB2 receptor absence in the rat central nervous system

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