For Research Use Only
Research Library
The Rejuvenate360 Research Library is a reference resource for qualified laboratories and researchers working with research-grade peptides. It summarizes good-practice fundamentals for handling, storing, and verifying research compounds, and links to our in-depth guides. All materials are provided for educational and laboratory-research literacy only — not medical advice and not instructions for personal use.
Product Catalog (PDF)
Download the full Rejuvenate360 research compound catalog with compounds, specifications and documentation references.
Working With Lyophilized Peptides
Most research peptides ship as a lyophilized (freeze-dried) powder to protect stability during transport. Before use in a protocol, the powder is reconstituted with an appropriate sterile diluent — commonly bacteriostatic water — added slowly against the inner wall of the vial rather than directly onto the pellet. The vial is swirled gently until fully dissolved and never shaken, which helps preserve the peptide’s structure. Reconstituted material is typically divided into single-use aliquots to minimize repeated handling.
Storage & Stability
Stability depends on both the form and the temperature of the compound. Sealed lyophilized vials are generally stored cold, away from light and moisture, and many are kept frozen for long-term storage. Once reconstituted, peptides are considerably less stable: they are usually refrigerated and used within a short window. Repeated freeze–thaw cycles accelerate degradation, which is why aliquoting at the time of reconstitution is standard practice. Always follow the storage conditions specified on each product’s documentation.
→ Read the full Storage & Handling guide
Purity & Identity Verification
Two questions matter for any research compound: is it the correct molecule (identity), and how much of the sample is the target peptide (purity). Identity is confirmed by mass spectrometry, which compares the measured molecular weight against the expected value. Purity is assessed by high-performance liquid chromatography (HPLC), usually reported as a percentage of the main peak. A purity figure is only meaningful alongside the method used and the specific lot it describes.
Certificates of Analysis (CoA)
A Certificate of Analysis documents the testing results for one specific production lot. It generally reports the compound identity, the purity percentage and the method used (for example, HPLC), the appearance, and the lot number it applies to. Because results are lot-specific, a CoA should always match the exact lot received. Rejuvenate360 supplies lot documentation with its research compounds so that results can be traced to what is in the vial.
Responsible Research Use
Rejuvenate360 products are sold strictly for in-vitro laboratory research by qualified researchers and institutions, where permitted by law. They are not for human or veterinary use, are not drugs or dietary supplements, and have not been evaluated by the FDA. Researchers are responsible for appropriate laboratory practices, personal protective equipment, and compliance with all applicable regulations in their jurisdiction.
In-Depth Research Guides
The following guides go deeper into each topic. They are written for laboratory-research literacy and reference only.
- Introduction to Research Peptides
- How to Read a Peptide Certificate of Analysis (CoA)
- Understanding Peptide Purity and Identity Testing
- Peptide Storage and Stability Basics
- Lyophilized Peptides Explained
- Common Laboratory Handling Mistakes
- HPLC, Mass Spectrometry, and Third-Party Testing
- How Peptide Naming Conventions Work
- Preclinical Research Versus Human Clinical Evidence
- Questions to Ask When Evaluating a Research Peptide Supplier
- NAD+ vs NADH: Research Differences
- Semax vs Selank: Research Differences
- Storage & Handling (laboratory reference)
For Research Use Only. Not for human or veterinary use. Sold to qualified researchers and laboratories only. These products and statements have not been evaluated by the FDA.