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TPH2 agonist-1

Cat No.:V146303 Purity: ≥98%
TPH2 agonist-1 is an orally effective, blood-brain barrier-crossing 1,3,4-oxadiazol-2(3H)-one derivative TPH2 agonist.
TPH2 agonist-1
TPH2 agonist-1 Chemical Structure Product category: Tryptophan Hydroxylase
This product is for research use only, not for human use. We do not sell to patients.
Size Price
500mg
1g
Other Sizes
Official Supplier of:
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Product Description
TPH2 agonist-1 is an orally effective, blood-brain barrier-crossing 1,3,4-oxadiazol-2(3H)-one derivative TPH2 agonist. TPH2 agonist-1 upregulates TPH2 expression, increases 5-HT and GABA levels, and exhibits antiepileptic activity in an SCN1A deficiency model. TPH2 agonist-1 stabilizes the electrophysiological activity of neuronal networks and inhibits aberrant spikes and bursts of activity. TPH2 agonist-1 has not shown significant hERG inhibition or cytotoxicity and could be used in research related to severe myoclonic epilepsy in infants (Dravet syndrome).
Biological Activity I Assay Protocols (From Reference)
ln Vitro
TPH2 agonist-1 (compound 20e) dose-dependently inhibited abnormal electrophysiological activity in iPSC-derived neurons of SMEI patients. At a concentration of 1 μM, it significantly reduced mean firing rate and burst percentage; while at concentrations of 10 μM and 50 μM, it further reduced network burst frequency and duration[1]. Treatment of wild-type (WT) and scn1lab KO zebrafish larvae with TPH2 agonist-1 (5 μM; 4 h) increased serotonin (5-HT) and γ-aminobutyric acid (GABA) levels and restored 5-HT immunoreactivity in the hypothalamus of KO larvae[1].
ln Vivo
TPH2 agonist-1 (compound 20e) showed brain-plasma ratios (B/P) of 4.36, 1.75, and 0.43 in mouse models, adult zebrafish models, and human blood-brain barrier (BBB) systems, respectively [1]. TPH2 agonist-1 (5 mg/kg; administered by gavage; single dose; heat-induced 30 minutes after administration) significantly reduced the severity of seizures in SCN1A+/- mice, prolonged the latency of the first seizure, increased the seizure threshold temperature, and inhibited hyperactivity, without affecting the behavior of wild-type mice [1]. TPH2 agonist-1 (2.5 μM, 5 μM; water exposure; single exposure; recording 30 minutes after exposure) dose-dependently reduced epileptic-like movements in scn1lab KO zebrafish larvae, with a reduction of 41.58% at 2.5 μM and 16.3% at 5 μM. It did not affect the normal movement of wild-type zebrafish and restored the blue preference of KO larvae [1].
Cell Assay
Cell viability assay [1]
Cell Types: VERO, HFL-1, L929, NIH3T3, CHO-K1
Test concentrations: 0.01 μM, 0.1 μM, 1 μM, 10 μM, 100 μM
Incubation Duration: 24 hours
Experimental Results: The viability of various mammalian cell lines was not affected. The IC50 values of all tested cell lines were greater than 100 μM as determined by WST analysis.
Animal Protocol
Animal/Disease Models:13-15 week old male and female 129S-Scn1atm1Kea/Mmjax heterozygous mice (SCN1A+/-) and their wild-type littermates + SMEI model [1]
Doses: 5 mg/kg
Route of Administration: Gavage; Frequency: Single dose; 30 minutes before heat induction
Experimental Results: Significantly reduced the severity of seizures in SCN1A+/- mice, with a 52% reduction in Racine score compared to the vector control group, prolonged the latency of the first seizure, and increased the seizure threshold temperature. In addition, it also suppressed the hyperactivity of SCN1A+/- mice by reducing the total movement distance and average speed without affecting the movement behavior of wild-type mice.
References

[1]. Development of Novel Small-Molecule Targeting SCN1A-Associated Severe Myoclonic Epilepsy of Infancy. J Med Chem. 2026;69(3):3362-3377.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C15H8CLF4N3O2
Molecular Weight
373.69
Appearance
Typically exists as solids at room temperature
SMILES
FC(C=C1)=CC(Cl)=C1CN2C(OC(C3=CC(C(F)(F)F)=NC=C3)=N2)=O
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 2.6760 mL 13.3801 mL 26.7601 mL
5 mM 0.5352 mL 2.6760 mL 5.3520 mL
10 mM 0.2676 mL 1.3380 mL 2.6760 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
  • Calculate the Volume of solution required to dissolve a compound of known mass to a desired concentration
  • 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.

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