PE-22-28
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Description
Product Overview
- Full Name: PE-22-28 Fragment of VIP
- Amino Acid Sequence: Pro-Leu-Ser-Arg-Leu-Asn-Ser
- Molecular Formula:C₃₄H₆₃N₁₃O₁₁
- Molecular Weight: ~825.95 g/mol
- CAS Number: N/A
- Core Mechanism
- Selectively bind VIP receptors to dilate microvessels and improve blood circulation.
- Inhibit pro-inflammatory cytokines to ease chronic mild inflammation.
- Protect intestinal and respiratory mucosal tissue.
- Regulate immune cell activity without systemic side effects of full-length VIP.
- Purity: ≥ 99% (Verified, Endotoxin < 1 EU/mg)
Product Attributes
| Attribute | Details |
|---|---|
| Purity | ≥ 99% full batch inspection, endotoxin level below 1 EU/mg |
| Unreconstituted Storage | -20 ± 5°C, sealed, protected from light and moisture, 24-month shelf life |
| Post-Reconstitution Storage | Refrigerate at 2–8°C, finish all liquid within 28 days; freezing is prohibited |
| Appearance | White to off-white lyophilized powder |
What is PE-22-28?
PE-22-28 is an investigational research material commonly evaluated in laboratory models involving neuropeptide signaling, stress-response models, and behavioral pathway research. For laboratory research use only.
How PE-22-28 Works
PE-22-28 is studied as a synthetic neuropeptide research fragment in controlled laboratory workflows. It is commonly used in models involving neuropeptide signaling, stress-response models, and behavioral pathway research.
Research interest in PE-22-28 comes from its ability to help evaluate pathway behavior, receptor or target response, formulation stability, and analytical performance under controlled laboratory conditions. Results depend on model design, material handling, and validated research protocols.
Storage
This product is supplied as a lyophilized powder. Unopened vials can be stored at room temperature for up to 2 years when kept sealed, dry, and protected from light. Avoid excessive heat, moisture, and repeated temperature changes during storage.
After reconstitution, store the solution at 2-8°C, protected from light, and use it within 30 days. Label the vial with the reconstitution date. Use sterile handling, avoid vigorous shaking and repeated freeze-thaw cycles, and do not use the material if the seal is damaged or if persistent particles, unexpected cloudiness, or discoloration is present after dissolution.
FAQ
Why does the vial look empty or only contain a small amount of powder?
Lyophilized PE-22-28 can appear as a thin film, small cake, or light residue on the bottom or side wall of the vial. This is normal for freeze-dried material. Let the vial sit upright and inspect it under good lighting before reconstitution.
What should I do if the powder is stuck to the side of the vial?
This can happen during shipping. Keep the vial upright and allow it to return to room temperature before opening. When adding bacteriostatic water, direct the liquid gently down the inside wall of the vial so it contacts the powder gradually.
How should PE-22-28 be mixed after adding bacteriostatic water?
Do not shake vigorously. Gently swirl or roll the vial until the material is fully dissolved. If bubbles form, let the vial rest refrigerated until the solution clears.
What if the solution is cloudy after reconstitution?
Allow the vial to rest at 2-8°C and inspect again. If cloudiness, particles, discoloration, or floating material remain, do not use that vial for research work and contact support with photos and lot information.
How can I reduce contamination risk after reconstitution?
Use sterile technique, wipe the stopper before each access, avoid touching sterile surfaces, and keep the vial refrigerated when not in use. Discard the reconstituted solution after 30 days or sooner if contamination is suspected.
Can reconstituted PE-22-28 be frozen again?
Repeated freeze-thaw cycles are not recommended because they may reduce material quality. For routine lab handling, keep the reconstituted solution refrigerated at 2-8°C and use it within 30 days.
Product documentation
Specifications have not been published.
Batch reports
No public batches have been published for this product.
Additional information
| Specifications | 10mg*10 vials |
|---|
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