RLX-33
Based on 1 Customer Validation
RLX-33 is a potent, selective and blood-brain barrier (BBB) penetrant relaxin family peptide 3 (RXFP3) antagonist, also blocks relaxin-3-induced ERK1/2 phosphorylation, with IC50 values of 2.36 μM for RXFP3, 7.82 and 13.86 μM for ERK1 and ERK2 phosphorylation, respectively. RLX-33 can block the stimulation of food intake induced by the RXFP3-selective agonist R3/I5 in rats. RLX-33 can be used for the research of metabolic syndrome.
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- Purity : 99.79%
- CAS No.: 2784577-71-3
- 화학식: C24H19ClN4O4
- 분자량:462.89
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보관:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 6 months , -20°C, 1 month
Biological Activity
제품 설명
IC50 & Target
IC50: 2.36 μM (RXFP3), 7.82 μM (ERK1 phosphorylation), 13.86 μM (ERK2 phosphorylation)[1]
In Vivo
RLX-33 (10 mg/kg; IP, single dosage) exhibits a good brain penetration and highly protein-bound in rats plasma[1].
Pharmacokinetic Parameters of RLX-33 in male Wistar rats (IP, 10 mg/kg)[1].
| plasma | brain | |
| Cmax (ng/mL) | 1401 | 1552 |
| tmax (h) | 0.5 | 2.0 |
| t1/2 (h) | 1.9 | 4.9 |
| AUCinf (ng/mL·h) | 5352 | 12519 |
| CL_F (mL/min/kg) | 43.8 |
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Male Wistar rats (intracerebroventricular administration of R3/I5 stimulated food intake[1]
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Dosage:10 mg/kg
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Administration:IP, single dosage
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Result:Attenuated the R3/I5-induced increase in food intake.
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Animal Model:Male Wistar rats[1]
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Dosage:10 mg/kg
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Administration:IP, single dosage (Pharmacokinetic Analysis)
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Result:Exhibited a good brain penetration and highly protein-bound, with protein binding of 99.8% in rat plasma.
Chemical Information
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CAS No. 2784577-71-3
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Appearance Solid
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분자량 462.89
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화학식 C24H19ClN4O4
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Color White to light yellow
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SMILES
O=C(C(C1)CN(CC2=CC=CO2)C1=O)NC3=CC=C(C4=NC(C5=CC=C(Cl)C=C5)=NO4)C=C3
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선적
Room temperature in continental US; may vary elsewhere.
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보관
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
용액&용해도
In Vitro:
DMSO : 125 mg/mL (270.04 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
In Vivo:
Select the appropriate dissolution method based on your experimental animal and administration route.
- For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
- To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for In Vivo experiments, it is recommended to prepare freshly and use it on the same day.
- The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:
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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
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%DMSO +
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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%+
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+%Tween-80 + +
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%Saline +
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Working solution concentration: 0.22 mg/mL
Method for preparing stock solution: mg drug dissolved in μL DMSO. Stock solution concentration: mg/mL.
1. Take μL DMSO stock solution;
2. Add μL .
μL , mix evenly;
3. Then add μL Tween 80, mix evenly;
4. Then add μL
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Protocol
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Kinase activity and phosphorylation assays
Kinase activity assays measure the ability of kinases to transfer phosphate groups from ATP to specific substrates, while phosphorylation assays detect the presence and levels of phosphorylated proteins. Common methods include radiolabeled ATP incorporation (e. g. ,), ADP release detection via bioluminescence (e. g. ,[3]), enzyme-linked immunosorbent assays (ELISA) for phospho-specific epitopes (e. g. ,[6]), and microtiter-based formats for high-throughput screening (e. g. ,[8]). The ADP-Glo assay quantifies kinase activity by measuring ADP produced during phosphorylation using a luciferase-based system. Radiometric assays involve autoradiography or scintillation counting after incorporation of 32P-labeled ATP into substrate proteins. ELISA-based approaches rely on phospho-specific antibodies to detect activated kinases in cell lysates or purified samples.
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Western Blot
Western blotting (WB) is a commonly used experimental method in molecular biology, biochemistry, and immunogenetics for identifying and quantifying target proteins. It combines gel electrophoresis with immunoassay, enabling researchers to analyze protein expression, post-translational modifications, and molecular weight.
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Cell Cytotoxicity Assay
Cytotoxicity assays are usually based on the assessment of cell membrane damage, which can also be indirectly detected by measuring cell viability. Detection methods include MTT assay, CKK-8 assay, LDH assay and ATP assay, etc.
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Protocol for Kinase activity and phosphorylation assays
Kinase activity assays measure transfer of phosphate from ATP to a protein or peptide substrate, generating phosphorylated substrate, ADP, or incorporated radiolabeled phosphate as the readout; phosphorylation assays measure site-specific phosphorylation in cells or tissues as a proxy for kinase-pathway activation, inhibition, or substrate regulation. Phosphorylation can be detected by phospho-specific Western blot, immunoprecipitation kinase assay, phospho-immunofluorescence, phospho-flow cytometry, luminescent ADP detection, radiolabeled ATP incorporation, or reporter-based pathway assays, and these readouts can be applied to cancer cells, primary neurons, mouse tumors, organoids, inflammatory macrophages, ferroptosis studies, and mitophagy studies when the kinase target is biologically relevant.
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Research Protocol for Metabolic Diseases
AMP-activated protein kinase, AMPK, is a conserved cellular energy sensor that responds to reduced cellular energy status and coordinates metabolism by increasing ATP-generating catabolic pathways while suppressing ATP-consuming anabolic processes. In metabolic disease research, the AMPK pathway is experimentally relevant because it regulates hepatic lipid synthesis, fatty acid oxidation, glucose production, skeletal-muscle glucose disposal, mTORC1-linked biosynthesis, autophagy, mitochondrial homeostasis, and whole-body energy balance. The central pathway logic is that energy stress, metformin, exercise-like stimulation, or direct AMPK activators increase AMPKα Thr172 phosphorylation and downstream substrate phosphorylation, including ACC and RAPTOR. Phosphorylation of ACC suppresses lipogenesis and supports fatty acid oxidation, whereas phosphorylation of RAPTOR suppresses mTORC1 signaling and links cellular energy status to growth and protein synthesis control. The pathway is linked
순도&문서
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Data Sheet (271 KB)
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SDS (393 KB)
- English - EN (393 KB)
- Français - FR (393 KB)
- Deutsch - DE (393 KB)
- Norwegian - NO (393 KB)
- Español - ES (393 KB)
- Swedish - SV (393 KB)
- Italian - IT (393 KB)
- Korean - KR (393 KB)
- Portuguese - PT (393 KB)
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Handling Instructions (2659 KB)
References
Complete Stock Solution Preparation Table
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
|---|---|---|---|---|---|
| DMSO | 1 mM | 2.1603 mL | 10.8017 mL | 21.6034 mL | 54.0085 mL |
| 5 mM | 0.4321 mL | 2.1603 mL | 4.3207 mL | 10.8017 mL | |
| 10 mM | 0.2160 mL | 1.0802 mL | 2.1603 mL | 5.4009 mL | |
| 15 mM | 0.1440 mL | 0.7201 mL | 1.4402 mL | 3.6006 mL | |
| 20 mM | 0.1080 mL | 0.5401 mL | 1.0802 mL | 2.7004 mL | |
| 25 mM | 0.0864 mL | 0.4321 mL | 0.8641 mL | 2.1603 mL | |
| 30 mM | 0.0720 mL | 0.3601 mL | 0.7201 mL | 1.8003 mL | |
| 40 mM | 0.0540 mL | 0.2700 mL | 0.5401 mL | 1.3502 mL | |
| 50 mM | 0.0432 mL | 0.2160 mL | 0.4321 mL | 1.0802 mL | |
| 60 mM | 0.0360 mL | 0.1800 mL | 0.3601 mL | 0.9001 mL | |
| 80 mM | 0.0270 mL | 0.1350 mL | 0.2700 mL | 0.6751 mL | |
| 100 mM | 0.0216 mL | 0.1080 mL | 0.2160 mL | 0.5401 mL |