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GR103545

Alias: GR-103545 fumarate; GR 103545; GR-103545; GR103545
Cat No.:V2524 Purity: ≥98%
GR103545 is a potent and specific kappa-opioid receptor (κ-OR) agonist.
GR103545
GR103545 Chemical Structure CAS No.: 126766-43-6
Product category: Opioid Receptor
This product is for research use only, not for human use. We do not sell to patients.
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Top Publications Citing lnvivochem Products
Product Description
GR103545 is a potent and specific kappa-opioid receptor (κ-OR) agonist. 11GR103545 is a radioactive tracer that can be used for in vivo imaging.
Biological Activity I Assay Protocols (From Reference)
Targets
BRAF V600E ( IC50 = 8.2 nM ); BRAF ( IC50 = 19 nM ); CRAF ( IC50 = 56 nM ); MEK1 ( IC50 = 160 nM )
ln Vivo
This paper describes the opioid receptor pharmacology and in vivo activity of several novel benzene-acetamidopiperidine and benzeneacetamidopiperazine analogues. . They were all potent antinociceptive agents, the most potent compound, GR 103545, having an ED50 value in the mouse abdominal constriction test of 0.25 micrograms kg-1 s.c. The compounds also produced sedation and diuresis, but had little effect on respiration rate or gastrointestinal motility. [1]
Brain uptake of 11C-GR103545 was studied in baboons under control conditions and after blockade by naloxone (1 mg/kg intravenously). Uptake of the racemic 11C-GR89696 and of the inactive enantiomer (+)-11C-GR89696 was also evaluated. Regional total distribution volumes were derived using the arterial input function and a 2-tissue-compartment model.[2]
References

[1]. A series of novel, highly potent and selective agonists for the kappa-opioid receptor. Br J Pharmacol. 1990 Dec;101(4):944-8.

[2]. 11C-GR103545, a radiotracer for imaging kappa-opioid receptors in vivo with PET: synthesis and evaluation in baboons. J Nucl Med. 2005 Mar;46(3):484-94.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C23H29CL2N3O7
Molecular Weight
530.39826464653
Exact Mass
529.14
Elemental Analysis
C, 52.08; H, 5.51; Cl, 13.37; N, 7.92; O, 21.11
CAS #
126766-43-6
Related CAS #
126766-43-6 (fumarate); 126766-42-5
PubChem CID
9893214
Appearance
Solid powder
Hydrogen Bond Donor Count
2
Hydrogen Bond Acceptor Count
8
Rotatable Bond Count
7
Heavy Atom Count
35
Complexity
649
Defined Atom Stereocenter Count
1
SMILES
COC(=O)N1CCN([C@@H](C1)CN2CCCC2)C(=O)CC3=CC(=C(C=C3)Cl)Cl.C(=C/C(=O)O)\C(=O)O
InChi Key
ABTNETSDXZBJTE-WMQZXYHMSA-N
InChi Code
InChI=1S/C19H25Cl2N3O3.C4H4O4/c1-27-19(26)23-8-9-24(15(13-23)12-22-6-2-3-7-22)18(25)11-14-4-5-16(20)17(21)10-14;5-3(6)1-2-4(7)8/h4-5,10,15H,2-3,6-9,11-13H2,1H3;1-2H,(H,5,6)(H,7,8)/b;2-1+/t15-;/m1./s1
Chemical Name
(E)-but-2-enedioic acid;methyl (3R)-4-[2-(3,4-dichlorophenyl)acetyl]-3-(pyrrolidin-1-ylmethyl)piperazine-1-carboxylate
Synonyms
GR-103545 fumarate; GR 103545; GR-103545; GR103545
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: 94~100 mg/mL (188.5~199.4 mM)
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.5 mg/mL (4.71 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 (4.71 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 (4.71 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.


Solubility in Formulation 4: 5% DMSO+ 45% PEG300+ ddH2O: 1.0mg/ml (2.12mM)

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 1.8854 mL 9.4268 mL 18.8537 mL
5 mM 0.3771 mL 1.8854 mL 3.7707 mL
10 mM 0.1885 mL 0.9427 mL 1.8854 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:

  • Calculate the Mass of a compound required to prepare a solution of known volume and concentration
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  • Calculate the Concentration of a solution resulting from a known mass of compound in a specific volume
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
  • Enter 10 in the Concentration box and choose the correct unit (mM)
  • Enter 5 in the Volume box and choose the correct unit (mL)
  • Click the “Calculate” button
  • 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:
  • Enter 10 into the Concentration (Start) box and choose the correct unit (mM)
  • Enter 25 into the Concentration (End) box and select the correct unit (mM)
  • Enter 25 into the Volume (End) box and choose the correct unit (mL)
  • Click the “Calculate” button
  • 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:
  • To calculate molar mass of a chemical compound, please enter the chemical/molecular formula and click the “Calculate’ button.
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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Reconstitution Calculator allows you to calculate the volume of solvent required to reconstitute your vial.

  • Enter the mass of the reagent and the desired reconstitution concentration as well as the correct units
  • Click the “Calculate” button
  • The answer appears in the Volume (to add to vial) box
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.

Biological Data
  • Preparation of GR103545 and the chiral precursor 7. J Nucl Med . 2005 Mar;46(3):484-94.
  • (A) Sagittal (left), coronal (middle), and transverse (right) slices of representative baboon PET scan acquired from 40 to 80 min after injection of C-GR103545. Activity is concentrated in cingulate, frontal, temporal, and parietal cortices; medial temporal lobe; and striatum. J Nucl Med . 2005 Mar;46(3):484-94.
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