Avermectin B1a
Based on 1 publication(s) in Google Scholar
Avermectin B1a is an antiparasitic agent that paralyzes nematodes without causing hypercontraction or flaccid paralysis.
For research use only. We do not sell to patients.
- Purity: 99.56%
- CAS No.: 65195-55-3
- Formula: C48H72O14
- Molecular Weight:873.08
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Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 2 years , -20°C, 1 year
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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
Publications Citing Use of MedChemExpress (MCE) Avermectin B1a
MoreAll Parasite Isoforms
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Biological Activity
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Cell Line
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Type | Value | Description | References |
|---|---|---|---|---|
| B16 | IC50 |
20.5 μM
Compound: AVE B1a
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Growth inhibition of mouse B16 cells by MTT method
Growth inhibition of mouse B16 cells by MTT method
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[PMID: 25611131] |
| MG-63 | IC50 |
8.6 μM
Compound: AVE B1a
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Growth inhibition of human MG63 cells by MTT method
Growth inhibition of human MG63 cells by MTT method
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[PMID: 25611131] |
| SAOS-2 | IC50 |
14.7 μM
Compound: AVE B1a
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Growth inhibition of human Saos2 cells by MTT method
Growth inhibition of human Saos2 cells by MTT method
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[PMID: 25611131] |
[3H]AVM B1a preferentially binds to synaptic membranes from several regions of rat brain. [3H]AVM B1a specific binding to intact monolayers of granule cells increases rapidly with time of incubation and reaches equilibrium after approximately 20 min at 24°C. Higher concentrations of [3H]AVM B1a leads to markedly greater nonspecific binding, 60% at 25 nM. Various AVM analogs also produce concentration-dependent inhibition of [3H]AVM B1a binding in intact cerebellar neurons. AVM B1a and moxidectin are similar in potency (IC50 values, 120 and 126 nM, respectively)[3]. AVMB1a-stimulated chloride efflux from mouse brain synaptic vesicles results from the activation of GABA-insensitive chloride channels and that this action is distinct from their previously documented effects on GABA-gated chloride channels in mouse brain preparations[4].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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CAS No. 65195-55-3
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Appearance Solid
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Molecular Weight 873.08
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Formula C48H72O14
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Color White to light yellow
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SMILES
C[C@@H](CC)[C@]1([H])[C@@H](C)C=C[C@@]2(O[C@@]3([H])C[C@]([H])(OC([C@@]4([H])[C@@](/C(CO5)=C/C=C/[C@H](C)[C@H](O[C@@]6([H])C[C@H](OC)[C@@H](O[C@]7([H])O[C@@H](C)[C@H](O)[C@@H](OC)C7)[C@H](C)O6)/C(C)=C/C3)(O)[C@@]5([H])[C@H](O)C(C)=C4)=O)C2)O1
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Synonyms
Abamectin B1a
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Powder -20°C 3 years 4°C 2 years In solvent -80°C 2 years -20°C 1 year
Publications (1)
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Journal Impact Factor
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Most Recent
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Science
2025 Feb 21;387(6736):892-900. PMID: 39977508
Solvent & Solubility
DMSO : 25 mg/mL (28.63 mM; ultrasonic and warming and heat to 60°C; 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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
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 (2.86 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.
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 (281 KB)
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SDS (481 KB)
- English - EN (481 KB)
- Français - FR (481 KB)
- Deutsch - DE (481 KB)
- Norwegian - NO (481 KB)
- Español - ES (481 KB)
- Swedish - SV (481 KB)
- Italian - IT (481 KB)
- Korean - KR (481 KB)
- Portuguese - PT (481 KB)
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Handling Instructions (2659 KB)
References
[1]. Sun Y, et al. [Effects of avermectin B1a on soil microorganism and earthworm (Eisenia fetida)]. Ying Yong Sheng Tai Xue Bao. 2005 Nov;16(11):2140-3. [Content Brief]
[2]. Sun Y, et al. Bioaccumulation and elimination of avermectin B1a in the earthworms (Eisenia fetida). Chemosphere. 2005 Jul;60(5):699-704 [Content Brief]
[3]. Huang J, et al. Avermectin B1a binds to high- and low-affinity sites with dual effects on the gamma-aminobutyric acid-gated chloride channel of cultured cerebellar granule neurons. J Pharmacol Exp Ther. 1997 Apr;281(1):261-6. [Content Brief]
[4]. Payne GT, et al. Activation of gamma-aminobutyric acid insensitive chloride channels in mouse brain synaptic vesicles by avermectin B1a. J Biochem Toxicol. 1991 Winter;6(4):283-92. [Content Brief]
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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
|---|---|---|---|---|---|
| DMSO | 1 mM | 1.1454 mL | 5.7269 mL | 11.4537 mL | 28.6343 mL |
| 5 mM | 0.2291 mL | 1.1454 mL | 2.2907 mL | 5.7269 mL | |
| 10 mM | 0.1145 mL | 0.5727 mL | 1.1454 mL | 2.8634 mL | |
| 15 mM | 0.0764 mL | 0.3818 mL | 0.7636 mL | 1.9090 mL | |
| 20 mM | 0.0573 mL | 0.2863 mL | 0.5727 mL | 1.4317 mL | |
| 25 mM | 0.0458 mL | 0.2291 mL | 0.4581 mL | 1.1454 mL |
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