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CTEP (RO4956371)

Name: CTEP (RO4956371)
Brand: Selleck Chemicals
SKU: S2861
Rating: 5 (1 reviews)

Catalog No.S2861

For research use only.

CTEP (RO4956371) is a novel, long-acting, orally bioavailable allosteric antagonist of mGlu5 receptor with IC50 of 2.2 nM, shows >1000-fold selectivity over other mGlu receptors.

CAS No. 871362-31-1

Selleck's CTEP (RO4956371) has been cited by 1 Publication

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GluR Signaling Pathway Map

Biological Activity

Description

CTEP (RO4956371) is a novel, long-acting, orally bioavailable allosteric antagonist of mGlu5 receptor with IC50 of 2.2 nM, shows >1000-fold selectivity over other mGlu receptors.

Targets

mGlu5 ^[1]

2.2 nM

In vitro

CTEP inhibits quisqualate-induced Ca²⁺ mobilization with an IC50 of 11.4 nM and [³H]IP accumulation with an IC50 of 6.4 nM in HEK293 cells stably expressing human mGlu5. CTEP inhibits the constitutive activity of human mGlu5 by approximately 50% with an IC50 of 40.1 nM in HEK293 cells stably expressing human mGlu5. ^[1]

In vivo

CTEP is significantly active at doses of 0.1 mg/kg and 0.3 mg/kg in treatment of anxiety in mouse. CTEP significantly increases drinking time at doses of 0.3 mg/kg and 1.0 mg/kg in the Vogel conflict drinking test in rat, whereas it has no effect at lower doses. The half-life of CTEP (oral) is 18 h, and the B/P ratio based on total drug concentrations in plasma and whole brain homogenates is 2.6 in mice. After single oral doses of 4.5 and 8.7 mg/kg CTEP formulated as microsuspension in a saline/Tween vehicle administrated to adult C57BL/6 mice is rapidly absorbed and achieves close to maximal exposure after approximately 30 min. Chronic administration in adult mice with a dose of 2 mg/kg p.o. every 48 h for 2 months reaches a minimal CTEP brain exposure of 240 ng/g. CTEP fully displaces [³H]ABP688 in mouse brain regions known to express mGlu5, and 50% displacement is achieved with doses producing an average compound concentration of 77.5 ng/g measured in whole brain homogenate. ^[1] CTEP (2 mg/kg p.o. bid) achieves uninterrupted mGlu5 occupancy per 48 hours in mice. CTEP (2 mg/kg p.o.) treatment corrects elevated hippocampal long-term depression, excessive protein synthesis, and audiogenic seizures in the Fmr1 knockout mouse. ^[2]

Protocol (from reference)

Animal Research:^[1]	Animal Models: Male Sprague-Dawley rats Dosages: 1.0 mg/kg Administration: orally

References

Solubility (25°C)

In vitro	DMSO	78 mg/mL (199.09 mM)
	Ethanol	10 mg/mL (25.52 mM)
	Water	Insoluble
In vivo	Add solvents to the product individually and in order (Data is from Selleck tests instead of citations): 2% DMSO+40% PEG 300+2% Tween 80+ddH2O For best results, use promptly after mixing. Click to purchase: PEG300 Tween 80	9mg/mL

Chemical Information

Molecular Weight	391.77
Formula	C₁₉H₁₃ClF₃N₃O
CAS No.	871362-31-1
Storage	3 years	-20°C	powder
Storage	2 years	-80°C	in solvent
Smiles	CC1=C(N=C(N1C2=CC=C(C=C2)OC(F)(F)F)C)C#CC3=CC(=NC=C3)Cl

Download CTEP (RO4956371) SDF

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg Average weight of animals: g Dosing volume per animal:μL Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO + % + % Tween 80 + % ddH₂O

%DMSO+ %

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Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid 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 master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
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Dilution Calculator Molecular Weight Calculator

Clinical Trial Information

NCT Number	Recruitment	Interventions	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT02424916	Completed	Biological: Melanoma antigens-specific CD8+ T lymphocytes	Metastatic Melanoma	Nantes University Hospital\|UMR892	May 26 2015	Phase 1\|Phase 2

(data from https://clinicaltrials.gov, updated on 2022-01-17)

Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

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Frequently Asked Questions

Question 1:
Do you have advice for CTEP administration in mouse via injection?

Answer:
The IP formula for S2861 CTEP is 2% DMSO+40% PEG300+2% Tween-80 +H2O.

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