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Paliroden

Alias: SR 57667; SR57667; SR-57667
Cat No.:V27076 Purity: ≥98%
Paliroden is an orally bioavailable, neurotrophic, non-peptide compound that activates/agonizes the synthesis of endogenous neurotrophic factors for treating Alzheimer's and Parkinson's disease (PD)s.
Paliroden
Paliroden Chemical Structure CAS No.: 188396-77-2
Product category: New1
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
1mg
Other Sizes
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Product Description
Paliroden is an orally bioavailable, neurotrophic, non-peptide compound that activates/agonizes the synthesis of endogenous neurotrophic factors for treating Alzheimer's and Parkinson's disease (PD)s.
Paliroden (CAS#: 188396-77-2) is an orally active neurotrophic, non-peptidic compound that activates synthesis of endogenous neurotrophins. With a molecular formula of C26H24F3N and a molecular weight of 407.47 g/mol, Paliroden is a tetrahydropyridine derivative. The compound's IUPAC name is 1-(2-(Biphenyl-4-yl)ethyl)-4-(3-(trifluoromethyl)phenyl)-1,2,3,6-tetrahydropyridine. Paliroden is also known as SR57667B. It is indicated for use in Alzheimer's disease and Parkinson's disease research. By activating the synthesis of endogenous neurotrophins, Paliroden promotes neuronal survival, growth, and differentiation, potentially slowing the progression of neurodegenerative diseases. The compound has been investigated in clinical trials for Alzheimer's disease and Parkinson's disease. Paliroden is for research use only and is not for human therapeutic use.
Biological Activity I Assay Protocols (From Reference)
Targets
Paliroden does not have a single defined molecular target. It is an orally active neurotrophic, non-peptidic compound that activates the synthesis of endogenous neurotrophins. Neurotrophins are a family of proteins that promote the survival, growth, and differentiation of neurons. Key neurotrophins include nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), neurotrophin-3 (NT-3), and neurotrophin-4/5 (NT-4/5). By stimulating the synthesis of these endogenous neurotrophins, Paliroden supports neuronal function and survival. The compound's mechanism of action may involve modulation of signaling pathways that regulate neurotrophin expression. Paliroden is indicated for use in Alzheimer's disease and Parkinson's disease research, where neurotrophin levels are often reduced and neuronal survival is compromised. The compound has been investigated in clinical trials for these indications.
ln Vitro
Paliroden is an orally active neurotrophic compound that activates the synthesis of endogenous neurotrophins. By promoting the production of neurotrophins such as NGF and BDNF, Paliroden supports neuronal survival, growth, and differentiation. The compound's neurotrophic effects have been characterized in cell-based assays measuring neuronal survival and neurite outgrowth. Paliroden has been shown to be effective in preclinical models of neurodegenerative diseases, including Alzheimer's disease and Parkinson's disease. The compound's ability to cross the blood-brain barrier and its oral bioavailability make it suitable for in vivo studies. Paliroden has been investigated in clinical trials for Alzheimer's disease and Parkinson's disease.
ln Vivo
Paliroden has been evaluated in vivo in animal models of neurodegenerative diseases and in clinical trials. The compound is an orally active neurotrophic, non-peptidic compound that activates the synthesis of endogenous neurotrophins. In animal models, Paliroden has been shown to promote neuronal survival and function, reducing neurodegeneration and improving cognitive and motor function. The compound has been investigated in clinical trials for Alzheimer's disease and Parkinson's disease. In these trials, Paliroden's safety, tolerability, pharmacokinetics, and efficacy have been assessed. Detailed clinical trial data are available from published studies. Paliroden is for research use only and is not for human therapeutic use.
Enzyme Assay
Neurotrophin synthesis assays are performed using neuronal cell lines or primary neuronal cultures. Cells are cultured in appropriate media at 37°C with 5% CO₂ and treated with Paliroden at various concentrations for 24-72 hours. Neurotrophin levels (e.g., NGF, BDNF) in cell lysates or culture supernatants are measured by ELISA or Western blotting. Neuronal survival is assessed by counting viable neurons or by measuring neurite outgrowth. Gene expression of neurotrophins and their receptors is assessed by qRT-PCR. Each experiment includes vehicle controls (DMSO) and appropriate positive controls to validate the assay systems.
Cell Assay
Cellular activity of Paliroden is evaluated in neuronal cell lines (e.g., SH-SY5Y, PC12) or primary neuronal cultures. Cells are cultured in appropriate media at 37°C with 5% CO₂ and treated with Paliroden at concentrations ranging from 0.1 to 10 μM for 24-72 hours. Cell viability is assessed using MTT or LDH assays. Neurite outgrowth is assessed by microscopy. Neurotrophin levels are measured by ELISA. Neurotrophin receptor signaling is assessed by Western blotting for phosphorylated Trk receptors and downstream signaling components (e.g., ERK, AKT). Each experiment includes vehicle controls (DMSO) and appropriate positive controls (e.g., recombinant NGF or BDNF).
Animal Protocol
In vivo efficacy of Paliroden is evaluated in animal models of neurodegenerative diseases, including Alzheimer's disease and Parkinson's disease. The compound is administered orally at doses determined by preclinical studies. In Alzheimer's disease models, cognitive function is assessed using behavioral tests (Morris water maze, novel object recognition). Amyloid plaque burden and tau pathology are assessed by immunohistochemistry. In Parkinson's disease models, motor function is assessed using the rotarod test, open field test, and other behavioral tests. Dopaminergic neuron survival is assessed by tyrosine hydroxylase immunohistochemistry. Neurotrophin levels in the brain are measured by ELISA. Sample sizes typically range from 8-12 animals per group.
ADME/Pharmacokinetics
Molecular Weight: 407.47. Formula: C26H24F3N. CAS No.: 188396-77-2. IUPAC Name: 1-(2-(Biphenyl-4-yl)ethyl)-4-(3-(trifluoromethyl)phenyl)-1,2,3,6-tetrahydropyridine. Synonyms: Paliroden; SR57667B; SR5-7667B. Appearance: Solid. Purity: Typically ≥98%. Solubility: Soluble in DMSO. Storage: Typically at -20°C. Paliroden is an orally active neurotrophic, non-peptidic compound that activates synthesis of endogenous neurotrophins and is indicated for Alzheimer's disease and Parkinson's disease research.
Toxicity/Toxicokinetics
Paliroden has been evaluated in clinical trials for safety and efficacy. The compound is generally well-tolerated at therapeutic doses. Common adverse effects may include gastrointestinal disturbances, headache, and dizziness. As a neurotrophic compound, potential toxicities may include effects on cell growth and differentiation. Standard toxicology studies have been conducted as part of the clinical development program. The compound has been investigated in Phase II clinical trials for Alzheimer's disease and Parkinson's disease. Regulatory approvals have not been reported.
References

[1]. Effects of paliroden (SR57667B) and xaliproden on adult brain neurogenesis. Curr Alzheimer Res. 2006 Feb;3(1):35-6.

Additional Infomation
Paliroden is an orally effective non-peptide neurotrophic compound that activates the synthesis of endogenous neurotrophic factors. Studies have shown that Paliroden increases the rate of neural progenitor cell and mature neuron generation. It is indicated for the treatment of Alzheimer's disease and Parkinson's disease.
Drug Indications
Studied for the treatment of Alzheimer's disease and Parkinson's disease.
Mechanism of Action
SR 57667 may be an irreversible MAOB inhibitor.
Pharmacodynamics
SR 57667 is an orally effective non-peptide neurotrophic compound that activates the synthesis of endogenous neurotrophic factors. Studies have shown that SR 57667 increases the rate of neural progenitor cell and mature neuron generation.
Paliroden is also known as SR57667B and SR5-7667B. Its IUPAC name is 1-(2-(Biphenyl-4-yl)ethyl)-4-(3-(trifluoromethyl)phenyl)-1,2,3,6-tetrahydropyridine. Paliroden is an orally active neurotrophic, non-peptidic compound that activates synthesis of endogenous neurotrophins. It is indicated for use in Alzheimer's disease and Parkinson's disease research. Paliroden has been investigated in Phase II clinical trials for these indications. No regulatory approvals have been reported. Paliroden is for research use only.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C26H24F3N
Molecular Weight
407.48
Exact Mass
407.186
CAS #
188396-77-2
PubChem CID
11567682
Appearance
Typically exists as solid at room temperature
LogP
6.642
Hydrogen Bond Donor Count
0
Hydrogen Bond Acceptor Count
4
Rotatable Bond Count
5
Heavy Atom Count
30
Complexity
555
Defined Atom Stereocenter Count
0
SMILES
FC(C1=C([H])C([H])=C([H])C(=C1[H])C1=C([H])C([H])([H])N(C([H])([H])C([H])([H])C2C([H])=C([H])C(C3C([H])=C([H])C([H])=C([H])C=3[H])=C([H])C=2[H])C([H])([H])C1([H])[H])(F)F
InChi Key
CNEWKIDCGDXBDE-UHFFFAOYSA-N
InChi Code
InChI=1S/C26H24F3N/c27-26(28,29)25-8-4-7-24(19-25)23-14-17-30(18-15-23)16-13-20-9-11-22(12-10-20)21-5-2-1-3-6-21/h1-12,14,19H,13,15-18H2
Chemical Name
1-[2-(4-phenylphenyl)ethyl]-4-[3-(trifluoromethyl)phenyl]-3,6-dihydro-2H-pyridine
Synonyms
SR 57667; SR57667; SR-57667
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)
May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
Solubility (In Vivo)
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
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Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*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.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)


Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
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Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders


Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 2.4541 mL 12.2705 mL 24.5411 mL
5 mM 0.4908 mL 2.4541 mL 4.9082 mL
10 mM 0.2454 mL 1.2271 mL 2.4541 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

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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?
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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.

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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
g/mol

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Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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Definitions of molecular mass, molecular weight, molar mass and molar weight:
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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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