Regadenoson (CVT-3146)

Alias: CVT-3146; CVT 3146; CVT3146; Lexiscan
Cat No.:V5091 Purity: ≥98%
Regadenoson (CVT3146), a novel and potent A2A adenosine receptor agonist, is a coronary vasodilator that is commonly used in pharmacologic stress testing.
Regadenoson (CVT-3146) Chemical Structure CAS No.: 313348-27-5
Product category: Adenosine Receptor
This product is for research use only, not for human use. We do not sell to patients.
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Other Forms of Regadenoson (CVT-3146):

  • Regadenoson hydrate
Official Supplier of:
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description

Regadenoson (CVT3146), a novel and potent A2A adenosine receptor agonist, is a coronary vasodilator that is commonly used in pharmacologic stress testing. It quickly causes hyperemia and keeps it going long enough for radionuclide myocardial perfusion imaging. The medication's selectivity makes it better than other stressors like adenosine, which are less selective and consequently have more adverse effects.

Biological Activity I Assay Protocols (From Reference)
Targets
A2AR ( Ki = 290 nM )
ln Vitro
Regadenoson exhibits a comparatively low binding affinity (hA2A Ki=290 nM) for human A2A receptors, along with a selectivity that is over 30-fold greater than that of the A2B and A3AR subtypes, and 13-fold greater than that of the A1AR. While regadenoson acts as a full and strong agonist to cause coronary vasodilation, it acts as a weak partial agonist to cause cAMP accumulation in PC12 cells[1].
ln Vivo
Intravenous bolus injection of regadenoson results in a dose-dependent decrease in coronary vascular resistance and an increase in myocardial blood flow in a dog model. Regadenoson was demonstrated to cause a dose-dependent rise in heart rate and a drop in mean arterial pressure at higher dosages in a rat heart model. Additionally, serum norepinephrine and epinephrine increased by more than two times when regadenoson was administered. According to clinical data, regadenoson has an estimated clearance of 37.8 L/h and a volume of distribution of 11.5 L and 78.7 L (at steady-state). Its renal excretion accounts for 58% of its total elimination, and its terminal half-life ranges from 33 to 108 minutes[2].
Animal Protocol
Mongrel dogs (23-27 kg)
0.1, 0.175, 0.25, 0.5, 1.0, 2.5, 5 µg/kg
Peripheral intravenous injection; single
References

[1]. J Med Chem . 2014 May 8;57(9):3623-50.

[2]. J Am Coll Cardiol . 2009 Sep 22;54(13):1123-30.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C15H18N8O5
Molecular Weight
390.35402
Exact Mass
390.14
Elemental Analysis
C, 46.15; H, 4.65; N, 28.71; O, 20.49
CAS #
313348-27-5
Related CAS #
Regadenoson-d3; 313348-27-5 (free); 875148-45-1 (hydrate)
Appearance
Solid powder
SMILES
CNC(=O)C1=CN(N=C1)C2=NC(=C3C(=N2)N(C=N3)[C@H]4[C@@H]([C@@H]([C@H](O4)CO)O)O)N
InChi Key
LZPZPHGJDAGEJZ-AKAIJSEGSA-N
InChi Code
InChI=1S/C15H18N8O5/c1-17-13(27)6-2-19-23(3-6)15-20-11(16)8-12(21-15)22(5-18-8)14-10(26)9(25)7(4-24)28-14/h2-3,5,7,9-10,14,24-26H,4H2,1H3,(H,17,27)(H2,16,20,21)/t7-,9-,10-,14-/m1/s1
Chemical Name
1-[6-amino-9-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]purin-2-yl]-N-methylpyrazole-4-carboxamide
Synonyms
CVT-3146; CVT 3146; CVT3146; Lexiscan
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: 50~78 mg/mL (128.1~199.8 mM)
Ethanol: ~2 mg/mL
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.5 mg/mL (6.40 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (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 25.0 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: ≥ 2.5 mg/mL (6.40 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (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 25.0 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: ≥ 2.5 mg/mL (6.40 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 25.0 mg/mL clear DMSO stock solution to 900 μL of 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 2.5618 mL 12.8090 mL 25.6180 mL
5 mM 0.5124 mL 2.5618 mL 5.1236 mL
10 mM 0.2562 mL 1.2809 mL 2.5618 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.

Calculator

Molarity Calculator allows you to calculate the mass, volume, and/or concentration required for a solution, as detailed below:

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An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
  • Enter 350.26 in the Molecular Weight (MW) box
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  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

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
g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
Instructions to calculate molar mass (molecular weight) of a chemical compound:
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Definitions of molecular mass, molecular weight, molar mass and molar weight:
  • Molecular mass (or molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
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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.

Clinical Trial Information
NCT Number Recruitment interventions Conditions Sponsor/Collaborators Start Date Phases
NCT02130453 Active
Recruiting
Drug: Regadenoson
Ischemia
Ischemia M.D. Anderson Cancer Center August 28, 2014 Phase 4
NCT04521569 Recruiting Drug: Ramosetron
Drug: Placebo
University of Maryland, Baltimore June 22, 2020 March 27, 2023 Early Phase 1
NCT04316676 Recruiting Drug: Regadenoson
Diagnostic Test: CT-FFR
Coronary Artery Disease Emory University June 16, 2021 Not Applicable
NCT05583721 Recruiting Drug: [13N]NH3
Drug: Lexiscan
Sickle Cell Disease St. Jude Children's Research
Hospital
October 10, 2023 Phase 2
NCT04604782 Recruiting Drug: Regadenoson Myocardial Ischemia
Coronary Artery Disease
GE Healthcare May 20, 2021 Phase 1
Phase 2
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