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CGS 15943

Alias: CGS 15943 CGS15943 CGS-15943.
Cat No.:V18079 Purity: ≥98%
CGS 15943 is a novel, potent and selective adenosine receptor antagonist with Ki values of 3.5, 4.2, 16 and 51 nM for human A1, A2A, A2B and A3 receptors respectively.
CGS 15943
CGS 15943 Chemical Structure CAS No.: 104615-18-1
Product category: New1
This product is for research use only, not for human use. We do not sell to patients.
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description
CGS 15943 is a novel, potent and selective adenosine receptor antagonist with Ki values of 3.5, 4.2, 16 and 51 nM for human A1, A2A, A2B and A3 receptors respectively.
CGS 15943 is a potent, non-xanthine adenosine receptor antagonist with high affinity for A₁, A₂A, and A₂B adenosine receptors. It has been studied for its potential in the treatment of neurological and cardiovascular disorders. CGS 15943 is a research compound used to study adenosine receptor function and the role of adenosine in various physiological and pathological processes.
Biological Activity I Assay Protocols (From Reference)
Targets
CGS 15943 targets adenosine receptors, specifically the A₁, A₂A, and A₂B subtypes. Adenosine receptors are G protein-coupled receptors involved in numerous physiological processes including neurotransmission, cardiovascular function, and inflammation. By blocking adenosine receptors, CGS 15943 inhibits adenosine-mediated effects such as vasodilation, neurotransmitter release modulation, and immune suppression. The compound is a non-xanthine antagonist with high affinity for all three receptor subtypes.
ln Vitro
CGS 15943 slightly inhibits p110δ with an IC50 of 8.47 μM and suppresses the intermittent activity of class IB PI3K isoform p110γ with an IC50 of 1.1 μM [3]. HLF and SK-Hep are inhibited by CGS 15943 (0–20 μM; 72 hours). CGS 15943 (0 -20 μM; 24 hours) inhibits the development of HepG2 and PLC-PRF-5 cells [3] as well as the phosphorylation of Akt residues Ser473 and Thr308 in HLF and Sk-Hep-1 cells [3].
In vitro, CGS 15943 demonstrates potent adenosine receptor antagonism with high affinity for A₁, A₂A, and A₂B receptors. Specific Ki values for each receptor subtype are documented in the literature. The compound shows activity in receptor binding assays and functional assays measuring cAMP accumulation or other second messenger responses. It is soluble in DMSO and other organic solvents. The compound's potency and selectivity have been characterized in various cell-based and biochemical assays.
ln Vivo
In vivo, CGS 15943 has been studied in animal models of neurological and cardiovascular disorders. Adenosine receptor antagonists like CGS 15943 have been investigated for their potential to enhance cognition, improve motor function, and modulate cardiovascular responses. The compound's effects are mediated through blockade of adenosine-mediated inhibition of neurotransmitter release and modulation of vascular tone. Further studies are needed to fully characterize its therapeutic potential.
Enzyme Assay
Adenosine receptor binding assays are performed using membrane preparations from cells expressing human adenosine receptors or from brain tissue. Radioligand displacement assays use [³H]-DPCPX (A₁), [³H]-CGS21680 (A₂A), or other appropriate radiolabeled ligands. CGS 15943 is tested at various concentrations, and Ki values are calculated from competition binding curves. Functional assays measure inhibition of adenosine-induced cAMP accumulation or calcium flux.
Cell Assay
Cell viability assay [3]
Cell Types: HLF, SK-Hep-1, HepG2 and PLC-PRF-5 Cell
Tested Concentrations: 0 μM; ]. 1μM; 5μM; 10μM; 20 μM
Incubation Duration: 24 hrs (hours)
Experimental Results: Inhibited the growth of four different HCC cell lines.
Western Blot Analysis[3]
Cell Types: HLF and Sk-Hep-1 cells
Tested Concentrations: 0 μM; 1μM; 5μM; 10μM; 20 μM
Incubation Duration: 24 hrs (hours)
Experimental Results: Inhibition of PI3K/ in HLF and Sk-Hep-1 cells Akt pathway
In vitro cellular assays use cell lines expressing adenosine receptors. Cells are treated with CGS 15943 at various concentrations. Receptor activation is measured by second messenger assays (cAMP accumulation, calcium flux). Antagonist activity is assessed by measuring inhibition of agonist-induced responses. Cell viability is assessed by MTT assay. The compound is dissolved in DMSO for stock solutions and diluted in culture media for cellular experiments.
Animal Protocol
In vivo efficacy is evaluated in animal models of neurological disorders (e.g., Parkinson's disease, Alzheimer's disease, epilepsy) and cardiovascular disorders. CGS 15943 is administered orally or intraperitoneally. Behavioral assessments include motor function, cognition tests, and seizure susceptibility. Cardiovascular parameters include blood pressure, heart rate, and vascular responses. Pharmacokinetic studies are conducted to determine plasma concentrations and tissue distribution.
ADME/Pharmacokinetics
CGS 15943 is a non-xanthine adenosine receptor antagonist. Specific chemical properties including molecular weight, molecular formula, and CAS number are documented in the literature. The compound is typically stored at -20°C and protected from light. It is soluble in DMSO and other organic solvents. Specific pharmacokinetic parameters are documented in the literature from preclinical studies. The compound is metabolized in the liver and excreted primarily in urine.
Toxicity/Toxicokinetics
Specific toxicity data for CGS 15943 are documented in preclinical studies. As an adenosine receptor antagonist, its safety profile has been characterized in animal models. Common adverse effects may include cardiovascular effects (tachycardia, hypertension) and central nervous system effects (insomnia, anxiety) due to adenosine receptor blockade. Standard laboratory safety precautions should be followed when handling this compound. It is intended for research use only and not for human therapeutic applications.
References

[1]. CGS 15943, an adenosine A2 receptor antagonist, reduces cerebral ischemic injury in the Mongolian gerbil. Life Sci. 1994;55(3):PL61-5.

[2]. Adenosine receptors and their ligands. Naunyn Schmiedebergs Arch Pharmacol. 2000 Nov;362(4-5):382-91.

[3]. Caffeine and the analog CGS 15943 inhibit cancer cell growth by targeting the phosphoinositide 3-kinase/Akt pathway. Cancer Biol Ther. 2014 May;15(5):524-32.

Additional Infomation
CGS 15943 belongs to the triazoloquinazoline class of compounds, with the structure [1,2,4]triazolo[1,5-c]quinazoline, substituted at positions 2, 5, and 9 with furan-2-yl, amino, and chlorine groups, respectively. It is a potent antagonist of adenosine A1 and adenosine A2A receptors. It functions as an adenosine A1 receptor antagonist, an adenosine A2A receptor antagonist, a central nervous system stimulant, and an antitumor drug. It is a triazoloquinazoline compound, an organochlorine compound, a furan compound, a biaryl compound, an aromatic amine compound, and a primary amino compound.
CGS 15943 is a potent, non-xanthine adenosine receptor antagonist with high affinity for A₁, A₂A, and A₂B adenosine receptors. It is used as a research tool to study adenosine receptor function and the role of adenosine in various physiological and pathological processes including neurotransmission, cardiovascular function, and inflammation. The compound has been investigated for potential therapeutic applications in neurological and cardiovascular disorders. It is commercially available for research purposes only.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C13H8CLN5O
Molecular Weight
285.68852
Exact Mass
285.042
CAS #
104615-18-1
PubChem CID
2690
Appearance
White to off-white solid powder
Density
1.72 g/cm3
Boiling Point
566.6ºC at 760 mmHg
Melting Point
278-279 °C
Flash Point
296.5ºC
Vapour Pressure
7.4E-13mmHg at 25°C
Index of Refraction
1.84
LogP
3.354
Hydrogen Bond Donor Count
1
Hydrogen Bond Acceptor Count
5
Rotatable Bond Count
1
Heavy Atom Count
20
Complexity
373
Defined Atom Stereocenter Count
0
InChi Key
MSJODEOZODDVGW-UHFFFAOYSA-N
InChi Code
InChI=1S/C13H8ClN5O/c14-7-3-4-9-8(6-7)12-17-11(10-2-1-5-20-10)18-19(12)13(15)16-9/h1-6H,(H2,15,16)
Chemical Name
9-chloro-2-furan-2-yl-[1,2,4]triazolo[1,5-c]quinazolin-5-amine
Synonyms
CGS 15943 CGS15943 CGS-15943.
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 : ~12.22 mg/mL (~42.77 mM)
Solubility (In Vivo)
Solubility in Formulation 1: 1.22 mg/mL (4.27 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 12.2 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: 1.22 mg/mL (4.27 mM) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), suspension solution; with ultrasonication.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 12.2 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.

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Solubility in Formulation 3: ≥ 1.22 mg/mL (4.27 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 12.2 mg/mL clear DMSO stock solution to 900 μL 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 3.5003 mL 17.5015 mL 35.0030 mL
5 mM 0.7001 mL 3.5003 mL 7.0006 mL
10 mM 0.3500 mL 1.7501 mL 3.5003 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.

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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:
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  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
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Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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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.

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