Difamilast
Based on 3 publication(s) in Google Scholar
Difamilast (OPA-15406) is a topical, selective and nonsteroidal phosphodiesterase-4 (PDE4) inhibitor with particularly efficient inhibition of subtype B (IC50=11.2 nM). Difamilast can be used for the research of mild to moderate atopic dermatitis (AD).
For research use only. We do not sell to patients.
- Purity: 99.38%
- CAS No.: 937782-05-3
- Formula: C23H24F2N2O5
- Molecular Weight:446.44
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Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 2 years , -20°C, 1 year
To place orders, for customer services and technical support, please contact: MedChemExpress USA
Tel: 609-228-6898 E-mail: [email protected] [email protected]
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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
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Publications Citing Use of MedChemExpress (MCE) Difamilast
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Biological Activity
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PDE4B 11.2 nM (IC50) |
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
| NCT Number | Sponsor | Condition | Start Date |
Phase
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|---|---|---|---|---|
| NCT01329991 | Plexxikon| | 2011-05 | PHASE1 |
Chemical Information
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CAS No. 937782-05-3
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Appearance Solid
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Molecular Weight 446.44
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Formula C23H24F2N2O5
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Color White to off-white
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SMILES
CC(C)OC(C=C(C1=NC(CNC(C(C=CC=C2)=C2OCC)=O)=CO1)C=C3)=C3OC(F)F
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Synonyms
OPA-15406
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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 (3)
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Journal Impact Factor
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Most Recent
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Int J Mol Sci
Difamilast, a Topical Phosphodiesterase 4 Inhibitor, Produces Soluble ST2 via the AHR-NRF2 Axis in Human Keratinocytes. [Abstract]2024 Jul 19;25(14):7910. PMID: 39063153 -
J Dermatol Sci
PDE4 inhibition by difamilast regulates filaggrin and loricrin expression via keratinocyte proline-rich protein in human keratinocytes. [Abstract]2023 May;110(2):61-68. PMID: 37156706 -
Solvent & Solubility
DMSO : 100 mg/mL (223.99 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, 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 90% (20% SBE-β-CD in Saline)
Solubility: 2.5 mg/mL (5.60 mM); Suspended solution; Need ultrasonic
This protocol yields a suspended solution of 2.5 mg/mL. Suspended solution can be used for oral and intraperitoneal injection.
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 (274 KB)
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SDS (254 KB)
- English - EN (254 KB)
- Français - FR (254 KB)
- Deutsch - DE (254 KB)
- Norwegian - NO (254 KB)
- Español - ES (254 KB)
- Swedish - SV (254 KB)
- Italian - IT (254 KB)
- Korean - KR (254 KB)
- Portuguese - PT (254 KB)
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Handling Instructions (2659 KB)
References
[1]. Hanifin JM, et, al. OPA-15406, a novel, topical, nonsteroidal, selective phosphodiesterase-4 (PDE4) inhibitor, in the treatment of adult and adolescent patients with mild to moderate atopic dermatitis (AD): A phase-II randomized, double-blind, placebo-controlled study. J Am Acad Dermatol. 2016 Aug;75(2):297-305. [Content Brief]
[2]. Ahluwalia J, et, al. Phosphodiesterase 4 Inhibitor Therapies for Atopic Dermatitis: Progress and Outlook. Drugs. 2017 Sep;77(13):1389-1397. [Content Brief]
[3]. Soeberdt M, et, al. Small molecule drugs for the treatment of pruritus in patients with atopic dermatitis. Eur J Pharmacol. 2020 Aug 15;881:173242. [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 |
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| DMSO | 1 mM | 2.2399 mL | 11.1997 mL | 22.3994 mL | 55.9986 mL |
| 5 mM | 0.4480 mL | 2.2399 mL | 4.4799 mL | 11.1997 mL | |
| 10 mM | 0.2240 mL | 1.1200 mL | 2.2399 mL | 5.5999 mL | |
| 15 mM | 0.1493 mL | 0.7466 mL | 1.4933 mL | 3.7332 mL | |
| 20 mM | 0.1120 mL | 0.5600 mL | 1.1200 mL | 2.7999 mL | |
| 25 mM | 0.0896 mL | 0.4480 mL | 0.8960 mL | 2.2399 mL | |
| 30 mM | 0.0747 mL | 0.3733 mL | 0.7466 mL | 1.8666 mL | |
| 40 mM | 0.0560 mL | 0.2800 mL | 0.5600 mL | 1.4000 mL | |
| 50 mM | 0.0448 mL | 0.2240 mL | 0.4480 mL | 1.1200 mL | |
| 60 mM | 0.0373 mL | 0.1867 mL | 0.3733 mL | 0.9333 mL | |
| 80 mM | 0.0280 mL | 0.1400 mL | 0.2800 mL | 0.7000 mL | |
| 100 mM | 0.0224 mL | 0.1120 mL | 0.2240 mL | 0.5600 mL |
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