Spantide II
Based on 1 publication(s) in Google Scholar
Spantide II, an undecapeptide substance P (SP) analog, is a potent neurokinin-1 receptor (NK-1R) antagonist. Spantide II binds with NK-1R and blocks proinflammatory activities associated with SP. Spantide II can be used in the research of inflammatory skin disorders, such as psoriasis and contact dermatitis.
For research use only. We do not sell to patients.
- Purity: 99.47%
- CAS No.: 129176-97-2
- Formula: C86H104Cl2N18O13
- Molecular Weight:1668.76
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Storage:
Sealed storage, away from moisture and light.
Powder -80°C, 2 years , -20°C, 1 year* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)
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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) Spantide II
More
Biological Activity
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NK1R |
Chemical Information
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CAS No. 129176-97-2
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Appearance Solid
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Molecular Weight 1668.76
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Formula C86H104Cl2N18O13
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Color White to off-white
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Sealed storage, away from moisture and light
Powder -80°C 2 years -20°C 1 year * In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)
Publications (1)
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Journal Impact Factor
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Most Recent
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J Transl Med
The role of substance P in Th17/Treg imbalance and ocular surface damage in chronic allergic conjunctivitis. [Abstract]2025 Dec 1;23(1):1367. PMID: 41327447
Solvent & Solubility
DMSO : 100 mg/mL (59.92 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 (sealed storage, away from moisture and light). 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 (sealed storage, away from moisture and light). 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 (1.50 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. * In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)
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 (277 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
[1]. Xu XJ, et al. Spantide II, a novel tachykinin antagonist, and galanin inhibit plasma extravasation induced by antidromic C-fiber stimulation in rat hindpaw. Neuroscience. 1991;42(3):731-7. [Content Brief]
[2]. Kikwai L, et al. In vitro and in vivo evaluation of topical formulations of spantide II. AAPS PharmSciTech. 2005 Oct 31;6(4):E565-72. [Content Brief]
[3]. Babu RJ, et al. Percutaneous absorption and anti-inflammatory effect of a substance P receptor antagonist: spantide II. Pharm Res. 2004 Jan;21(1):108-13. [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, 6 months; -20°C, 1 month (sealed storage, away from moisture and light). 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 | 0.5992 mL | 2.9962 mL | 5.9925 mL | 14.9812 mL |
| 5 mM | 0.1198 mL | 0.5992 mL | 1.1985 mL | 2.9962 mL | |
| 10 mM | 0.0599 mL | 0.2996 mL | 0.5992 mL | 1.4981 mL | |
| 15 mM | 0.0399 mL | 0.1997 mL | 0.3995 mL | 0.9987 mL | |
| 20 mM | 0.0300 mL | 0.1498 mL | 0.2996 mL | 0.7491 mL | |
| 25 mM | 0.0240 mL | 0.1198 mL | 0.2397 mL | 0.5992 mL | |
| 30 mM | 0.0200 mL | 0.0999 mL | 0.1997 mL | 0.4994 mL | |
| 40 mM | 0.0150 mL | 0.0749 mL | 0.1498 mL | 0.3745 mL | |
| 50 mM | 0.0120 mL | 0.0599 mL | 0.1198 mL | 0.2996 mL |
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