Name: CGS 21680 HCl
Brand: Selleck Chemicals
SKU: S2153
Rating: 5 (14 reviews)

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Quality Control

Batch: Purity: 99.06%

99.06

Related Targets	CXCR Hedgehog/Smoothened PKA Adrenergic Receptor AChR 5-HT Receptor Histamine Receptor Dopamine Receptor Ras KRas
Other Adenosine Receptor Inhibitors	Reversine ZM241385 SCH58261 Etrumadenant (AB928) A2AR antagonist 1 Ciforadenant (CPI-444) Imaradenant (AZD4635) DPCPX Proxyphylline Alloxazine

Chemical Information, Storage & Stability

Molecular Weight	535.98	Formula	C₂₃H₂₉N₇O₆.HCl	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	124431-80-7	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	N/A			Smiles	CCNC(=O)C1C(C(C(O1)N2C=NC3=C(N=C(N=C32)NCCC4=CC=C(C=C4)CCC(=O)O)N)O)O.Cl

Solubility

In vitro
Batch:

DMSO : 100 mg/mL (186.57 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
=	×	×

Dilution Calculator Molecular Weight Calculator

In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	5.000mg/ml (9.33mM)	Taking the 1 mL working solution as an example, add 50 μL of 100 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to make it clear; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg Average weight of animals: g Dosing volume per animal:μL Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO + % + % Tween 80 + % ddH₂O

%DMSO+ %

Calculation results:

Working concentration: mg/ml;

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.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such as vortex, ultrasound or hot water bath can be used to aid dissolving.

Mechanism of Action

Targets/IC₅₀/Ki	Adenosine A2 receptor (in rat brain tissue) 22 nM
In vitro	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 (K_d = 15.5 nM) and limited capacity (apparent Bmax = 375 fmol/mg of protein) to a single class of recognition sites. In hippocampal slices, CGS 21680 acts as a weak agonist on pre- and postsynaptic measures of electrophysiological activity (putative A1 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.
In vivo	CGS 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.
References	[1] https://pubmed.ncbi.nlm.nih.gov/2795469/ [2] https://pubmed.ncbi.nlm.nih.gov/2600819/ [3] https://pubmed.ncbi.nlm.nih.gov/2156991/ [4] https://pubmed.ncbi.nlm.nih.gov/2322828/

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CGS 21680 HCl Adenosine Receptor agonist

Chemical Structure

Molecular Weight: 535.98