TB-500 Canada suppliers all print a purity figure, and for this compound that number answers the second question before the first. The label is the harder problem. Two different molecules travel under this name, and a percentage tells you nothing about which one is in the vial.
One is a seven-residue fragment. The other is the full 43-amino-acid protein it was cut from. Plenty of vendors sell them under a single product title, so you need to sort that out before you compare any decimal place on a chromatogram.
What Is TB-500? A Brief Research Context
TB-500 research peptide vials hold a synthetic copy of one part of a much larger protein. That design explains why identity is the first thing to check.
TB-500 vs. Full-Length Thymosin Beta-4: An Important Distinction
The parent molecule is a 43-amino-acid protein, the main actin-sequestering molecule in human cells. Its actin-binding domain spans residues 17 to 23, a stretch written LKKTETQ. TB-500 is the acetylated version of that stretch.
| TB-500 | Thymosin beta-4 | |
|---|---|---|
| Length | 7 residues | 43 residues |
| Trial record | Lab and animal models | Phase III as RGN-259 |
A title reading “TB-500 (Thymosin Beta-4)” blurs two molecules.
Why Researchers Study TB-500: Actin and Cell Migration
Interest comes from what that sequence does in models. The LKKTETQ stretch promotes angiogenesis, wound healing and cell migration.
Anti-doping regulators reached it from the other direction. The 2026 WADA list names thymosin beta-4 and its derivatives, including TB-500, as prohibited at all times.
What to Look for in a TB-500 Supplier
When choosing a TB-500 Canada supplier, check three things. Each one produces a document, and you can review it before any money moves.
HPLC Purity and Third-Party Verification
Two instruments answer different questions. Purity testing measures how much of the vial is the main component. Mass spectrometry checks whether it is the molecule on the label.
For a fragment sold under the parent protein’s name, identity weighs more. A TB-500 COA tied to a batch outranks a standing claim of 99 percent.
Lyophilized Vials: Stability Window and Format
A TB-500 lyophilized vial is the format to buy. General handling guidance puts peptide solutions at about a week at 4 degrees Celsius. Stored cold, the powder lasts much longer.
Reconstitution windows vary by seller, with published Canadian figures ranging from one week to three. Treat any number as that supplier’s claim, and follow the TB-500 storage notes with your batch.
Domestic Canadian Shipping
Ordering from a supplier that ships within Canada can simplify logistics compared with international shipping. Confirm where orders are dispatched from, because a Canadian website does not always mean the inventory is located in Canada.
Where to Buy TB-500 in Canada: Top Picks
Three kinds of TB-500 sellers show up in this market. They differ mainly in how much a buyer can verify up front, rather than in what the page claims.
#1. ResearchedPeptides.ca
Known for dual-method verification. Researchers who want identity confirmed alongside purity can buy TB-500 Canada from ResearchedPeptides.ca, which lists HPLC purity testing and mass spectrometry identity verification against its TB-500 vials.
Those two claims are evidenced differently. The public report for the 5mg vial shows 98.99 percent purity and 4.98mg content, dated 16 June 2026. The mass spectrometry identity is a supplier statement on the product page and does not appear in that report.
- Vial: 5mg and 10mg lyophilized powder
- Price range: $54.99 to $94.99
- Published report: 98.99 percent purity, 4.98mg content, 16 June 2026
- Storage: 2 to 8 degrees Celsius for routine use, -20 for extended holding
- Ships: Canada Post Xpresspost from British Columbia
- Transit: about two business days across most of Canada
- Free shipping over: $199
Reports for the rest of the catalogue sit on the same page.
#2. International Alternatives
American and offshore vendors also sell TB-500, and some may offer broader product catalogues or different pricing. However, international shipping can involve longer delivery times and additional logistics compared with ordering from a Canadian supplier.
#3. Other Options
The cheapest TB-500 Canada listings sit with marketplace sellers and social accounts. Few publish a report tied to the batch on the shelf, and you can’t verify a certificate promised after checkout before you pay.
TB-500 Red Flags and What to Avoid
Two supplier habits should stop a TB-500 order before payment. Both are visible on the product page, so neither one takes an email to uncover.
Liquid TB-500: A Stability and Purity Warning
Pre-mixed vials arrive with the clock running, and you cannot see when it started. The vendor picked the solvent, fill date and storage.
Powder removes those unknowns. Peptides also pull in moisture from the air, which lowers content and shortens shelf life. A sealed vial is steadier.
No COA or In-House Testing Only
A supplier that tests its own material and publishes nothing gives you no way to verify it.
Watch for the quieter version. A generic lab-tested badge, with no dated report or batch to match, tells you nothing.
TB-500 Buying FAQ
What Is the Difference Between TB-500 and Thymosin Beta-4?
Length. Thymosin beta-4 is the complete 43-amino-acid protein. TB-500 is the acetylated seven-residue fragment from its actin-binding region.
The two are not interchangeable in a protocol. A vial labelled with both names doesn’t tell you which it contains.
Is TB-500 Legal for Research Use in Canada?
TB-500 is marketed by research peptide suppliers for laboratory research purposes only and is not intended for human use. Researchers should ensure they source materials from suppliers that provide batch-specific analytical documentation, including purity and identity testing.
TB-500 also appears on the World Anti-Doping Agency’s prohibited list for competitive sport.
How Long Is Reconstituted TB-500 Stable For?
No figure here is settled. General guidance puts peptide solutions at about a week at 4 degrees Celsius, while Canadian vendors publish windows up to three weeks. Refrigerate on reconstitution and minimize freeze-thaw cycles.
Sourcing HPLC-Verified TB-500 for Canadian Laboratories
A TB-500 Canada purchase prioritizes identity over purity. A seven-residue fragment and a 43-residue protein share a product name across much of this market, and a purity percentage says nothing about which of them shipped.
Canadian researchers sourcing HPLC-verified TB-500 for laboratory use have one domestic supplier with a dated figure on record. The published lab results at ResearchedPeptides.ca list the 5mg vial at 98.99 percent, based on a 16 June 2026 report dispatched by Xpresspost from British Columbia.
Disclaimers
All compounds discussed in this article are intended for laboratory research use only and are not for human consumption, therapeutic use, or self-administration.
