Selank 50mg: What to Check Before You Order
Selank is a well-known reference peptide in neurobiology and stress-response research, and demand for larger vial sizes has grown as labs scale up study designs. If you’re looking for selank 50mg, the vial size matters less than what’s actually inside it. This guide explains the compound, what “50mg” can mean across different suppliers, and how to evaluate a listing before you buy.
Research use only. Selank is sold for laboratory research. It is not a medicine, supplement or food, and it is not intended for human or veterinary use.
What Is Selank?
Selank is a synthetic heptapeptide derived from tuftsin, an immunomodulatory peptide fragment. Its sequence is Thr-Lys-Pro-Arg-Pro-Gly-Pro, with a molecular weight of roughly 751.9 g/mol and molecular formula C33H57N11O9. It’s investigated in neuroscience and biochemistry research for its interaction with stress-related and neuromodulatory pathways, and it appears regularly in peer-reviewed literature on peptide pharmacology.
Standard Selank is typically supplied as a lyophilised powder, ≥98% purity by HPLC, and stored at -20°C protected from light and moisture.
What “50mg” Actually Means: Check the Product Carefully
This is the single most important check before you buy selank 50mg. Two things vary between listings that look similar:
- Plain Selank vs N-Acetyl Selank. Some suppliers sell the parent peptide; others sell the acetylated derivative, N-Acetyl Selank, which has a different molecular formula (C35H60N12O10, approximately 751.89 g/mol on some listings — note this figure sometimes gets conflated with the parent compound’s weight, so treat any single figure with caution and check the COA). The two are related but not identical, and a listing should say clearly which one you’re getting.
- Vial size availability. 5mg is the most common Selank vial size on the UK market. 50mg tends to appear as a bulk or “premium” size and is not always in stock. Confirm the size is genuinely available before you build a page or order around it.
If a listing doesn’t specify the exact compound name, sequence and molecular formula, ask before ordering.
How to Buy Selank 50mg For Sale Without Guessing
When you’re browsing selank 50mg for sale listings, work through this checklist:
- Confirm the exact compound. Match the sequence (Thr-Lys-Pro-Arg-Pro-Gly-Pro for plain Selank) against what the listing states.
- Request the batch-specific COA. It should show HPLC purity, a lot number matching your vial, and ideally mass spectrometry confirming identity.
- Check real stock, not just a listed variant. Bulk sizes are the ones most likely to show “sold out” once you reach checkout.
- Compare cost per milligram, not the headline price. A 50mg vial should cost less per mg than five 10mg vials, once shipping is included.
- Verify UK business details. Company number, registered address and a working contact method.
- Avoid any dosing or health claims. A research supplier should never suggest human use.
Selank 50mg in UK: Sourcing and Delivery
Buying selank 50mg in uk from a UK-based supplier avoids the customs delays and cold-chain risk that come with importing peptides internationally. Look for:
- Tracked, signature-required delivery
- Packaging suited to a lyophilised peptide (padded, discreet, temperature-aware in warmer months)
- A stated shipping and returns policy, not just a generic checkout note
- UK manufacturing or repackaging, if that matters for your institution’s procurement rules
Specifications to Look For
| Specification | What a credible 50mg listing should state |
|---|---|
| Compound | Selank (parent) or N-Acetyl Selank, named explicitly |
| Sequence | Thr-Lys-Pro-Arg-Pro-Gly-Pro (parent) |
| Molecular weight | ~751.9 g/mol (parent); confirm the figure against the COA |
| Purity | ≥98%, HPLC-verified, with method stated |
| Form | Lyophilised powder |
| Documentation | Batch-specific COA, ideally with QR or lot lookup that actually works |
| Labelling | “For research use only,” no dosing guidance |
Storage and Handling
- Store sealed vials at -20°C, protected from light and moisture
- Let a sealed vial reach ambient temperature before opening, to avoid condensation
- Once reconstituted, keep refrigerated (2-8°C) and use within the timeframe your COA or SDS specifies; avoid repeat freeze-thaw cycles
- Label reconstituted aliquots with date and batch number
Always follow your own lab’s validated protocols over generic supplier instructions.
Supplier Comparison at a Glance
| Factor | Strong supplier | Warning signs |
|---|---|---|
| Compound naming | States Selank vs N-Acetyl Selank clearly | Ambiguous or interchangeable naming |
| Testing | Batch COA, working QR/lot verification | Broken links, generic PDFs |
| Stock | 50mg genuinely available | Listed but always “sold out” |
| Pricing | Clear bulk/per-mg pricing tiers | Price jumps with no explanation |
| Claims | Research-use wording only | Any health or performance claims |
Frequently Asked Questions
Is Selank 50mg the same product as Selank 5mg, just bigger?
Usually, yes, if the supplier confirms it’s the same compound and purity. Always check the COA rather than assuming.
Is N-Acetyl Selank the same as Selank?
No. It’s a related, acetylated derivative with a different molecular formula. Treat them as distinct products.
Why is 50mg harder to find in stock than 5mg?
Bulk sizes have lower turnover, so suppliers hold less inventory and sell out more often.
What should arrive with my order?
A labelled vial with a batch number, plus access to that batch’s COA and, ideally, an SDS.
Final Thoughts
A 50mg vial is only a good deal if it’s the compound you think it is, backed by a real COA, and actually in stock. Check the sequence, check the documentation, and compare cost per milligram before you commit.
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