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    CGS 21680 HCl
    CGS 21680 HCl

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    This product is for research use only, not for human use. We do not sell to patients.
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    InvivoChem Cat #: V1482
    CAS #: 124431-80-7Purity ≥98%

    Description: CGS 21680 HCl is a potent and specific adenosine A2 receptor agonist with IC50 of 22 nM, it exhibits 140-fold over A1 receptor. In rat striatal membranes, CGS 21680 potently prevents ligands from binding to A2 adenosine receptors with IC50 value of 22nM. In the binding assay, CGS 21680 shows no effect to other putative neurotransmitter/neuromodulator sites in brain membranes such as adrenergic, dopamine and serotonin. In the rat heart model, CGS 21680 is effective in increasing coronary flow with EC25 value of 2nM.

    References: J Pharmacol Exp Ther. 1989 Oct;251(1):47-55; Brain Res. 1990 Feb 19;509(2):328-30.

    Related CAS #: 124431-80-7 (HCl)   120225-54-9 (free) 

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    Molecular Weight (MW)535.98
    FormulaC23H29N7O6.HCl
    CAS No.124431-80-7
    Storage-20℃ for 3 years in powder form
    -80℃ for 2 years in solvent
    Solubility (In vitro)DMSO: 107 mg/mL (199.6 mM)
    Water: <1 mg/mL
    Ethanol: <1 mg/mL
    Solubility (In vivo)30% Propylene glycol, 5% Tween 80, 65% D5W: 30 mg/mL  
    SynonymsCGS21680; CGS-21680; CGS 21680; CGS-21680 HCl


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    In Vitro

    In vitro activity: CGS 21680 HCl is an adenosine A2 receptor agonist with IC50 of 22 nM, exhibits 140-fold over A1 receptor. In an isolated perfused working rat heart model, CGS 21680C effectively increases coronary flow with an ED25 value of 1.8 NM. CGS 21680 binds adenosine A2 receptor with high affinity (Kd = 15.5 nM) and limited capacity (apparent Bmax = 375 fmol/mg of protein) to a single dass of recognition sites. In hippocampal slices, CGS 21680 apis weak agonist on pre- and postsynaptic measures of electrophysiologicaJ activity (putative Al receptor mediated events) and is ineffective at stimulating the formation of cAMP (a putative A2 mediated response). In striatal slices, CGS 21680 potently stimulates the formation of cAMP with an EC50 of 110 nM but is ineffective at inhibiting electrically stimulated dopamine release. CGS 21680A is the hydrochloride salt, while CGS 21680C is the sodium salt of CGS 21680.


    Cell Assay: In rat striatal membranes, CGS 21680 potently prevents ligands from binding to A2 adenosine receptors with IC50 value of 22nM. In the binding assay, CGS 21680 shows no effect to other putative neurotransmitter/neuromodulator sites in brain membranes such as adrenergic, dopamine and serotonin. In the rat heart model, CGS 21680 is effective in increasing coronary flow with EC25 value of 2nM. 

    In VivoCGS 21680A is active p.o. in the spontaneously hypertensive rat at a dose of 10 mg/kg with efficacy for up to 24 hr. CGS 21680A caused a transient (60 min) increase in heart rate. CGS 21680 is a potent depressant of the spontaneous, acetylcholine and glutamate evoked firing of rat cerebral cortical neurons.
    Animal modelRats
    Formulation & DosageDissolved in water; 10 mg/kg; p.o.
    References

    J Pharmacol Exp Ther. 1989 Oct;251(1):47-55; Brain Res. 1990 Feb 19;509(2):328-30.


    These protocols are for reference only. InvivoChem does not independently validate these methods.

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