LM-189
LM-189 is a β2-adrenergic receptor (β2AR) ligand and G protein-biased modulator with a human β2AR Ki of 0.063 nM.LM-189 promotes β2AR coupling to Gαs and Gαi heterotrimers, stabilizes distinct β2AR conformations including a TM6 outward state, and increases β2AR ICL2 dynamics.LM-189 restricts β2AR ligand-binding pocket conformational heterogeneity, stabilizes polar ligand-receptor interaction networks, and exhibits bias toward Gαi signaling over Gαs signaling.LM-189 enabled cryo-EM structural characterization of the β2AR-Gi complex.LM-189 can be used for the research of congestive heart failure.
For research use only. We do not sell to patients.
- Purity: 96.58%
- Formula: C26H36F3NO6
- Molecular Weight:515.56
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Storage:Pure form -20°C, 3 years ; In solvent -80°C, 6 months , -20°C, 1 month
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Purity & Documentation
- References
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Help & FAQs
All Adrenergic Receptor Isoforms
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Biological Activity
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β2 adrenoceptor 0.063 nM (Ki) |
Beta-1 adrenergic receptor 28 nM (Ki) |
LM-189 exhibits extremely high affinity for human β2-adrenergic receptors in HEK-293T cell membranes (Ki=0.063 nM), and shows low affinity for human β1-adrenergic receptors (Ki=28 nM)[1].
LM-189 (75 μM; protected from light; 1 h) stabilizes a unique conformation of the β2-adrenergic receptor; the outward movement amplitude of transmembrane helix 6 (TM6) or the proportion of the active state of this conformation is higher than that induced by the full agonist BI-167107 (HY-121251)[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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Appearance Oil
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Molecular Weight 515.56
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Formula C26H36F3NO6
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Color Light yellow to brown
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SMILES
OC1=CC=C([C@@H](O)CNCCCCCCOCCCCC2=CC=CC=C2)C=C1O.O=C(O)C(F)(F)F
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Pure form -20°C 3 years In solvent -80°C 6 months -20°C 1 month
Solvent & Solubility
DMSO : 100 mg/mL (193.96 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)
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.
Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
Solubility: ≥ 2.5 mg/mL (4.85 mM); Clear solution
This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.
Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: ≥ 2.5 mg/mL (4.85 mM); Clear solution
This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
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.
Purity & Documentation
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Data Sheet (270 KB)
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SDS (251 KB)
- English - EN (251 KB)
- Français - FR (251 KB)
- Deutsch - DE (251 KB)
- Norwegian - NO (251 KB)
- Español - ES (251 KB)
- Swedish - SV (251 KB)
- Italian - IT (251 KB)
- Korean - KR (251 KB)
- Portuguese - PT (251 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 |
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| DMSO | 1 mM | 1.9396 mL | 9.6982 mL | 19.3964 mL | 48.4910 mL |
| 5 mM | 0.3879 mL | 1.9396 mL | 3.8793 mL | 9.6982 mL | |
| 10 mM | 0.1940 mL | 0.9698 mL | 1.9396 mL | 4.8491 mL | |
| 15 mM | 0.1293 mL | 0.6465 mL | 1.2931 mL | 3.2327 mL | |
| 20 mM | 0.0970 mL | 0.4849 mL | 0.9698 mL | 2.4245 mL | |
| 25 mM | 0.0776 mL | 0.3879 mL | 0.7759 mL | 1.9396 mL | |
| 30 mM | 0.0647 mL | 0.3233 mL | 0.6465 mL | 1.6164 mL | |
| 40 mM | 0.0485 mL | 0.2425 mL | 0.4849 mL | 1.2123 mL | |
| 50 mM | 0.0388 mL | 0.1940 mL | 0.3879 mL | 0.9698 mL | |
| 60 mM | 0.0323 mL | 0.1616 mL | 0.3233 mL | 0.8082 mL | |
| 80 mM | 0.0242 mL | 0.1212 mL | 0.2425 mL | 0.6061 mL | |
| 100 mM | 0.0194 mL | 0.0970 mL | 0.1940 mL | 0.4849 mL |
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