Why Do Researchers Search for “TB-500 5mg”?
Researchers search for “TB-500 5mg” because 5mg is the most common lyophilized vial size for this peptide, and the query combines the molecule name with the exact pack size they need to budget for an experiment. The phrase is a buying-intent query, not an informational one, which means people typing it are comparing suppliers against a specific quantity.
TB-500 is the common name for a fragment of thymosin beta-4, a 43-amino-acid peptide studied for actin regulation and tissue-repair signalling in laboratory models. The 5mg figure refers only to the amount of lyophilized powder in the vial, not to any dosing or clinical measure.
What the 5mg Vial Format Actually Means
A 5mg vial contains 5 milligrams of lyophilized peptide powder that must be reconstituted in a solvent before use, and the number describes mass only — it has no relationship to any human or veterinary dosing. Peptides in this class are commonly supplied at 5mg, 10mg or 15mg, and 5mg is simply the entry-level research quantity.
Because 5mg is a small mass, accurate weighing and careful reconstitution matter more than with larger vials — see our reconstitution guidance for handling detail.
Confirming Molecular Identity Before You Buy
Before sourcing any TB-500, confirm the molecular identity on the COA matches the expected formula C152H252N44O42, since a mismatch between the advertised molecule and the certificate is the first red flag of a mislabeled product. Purity, HPLC and mass spectrometry data should all be present on the same document.
For a full walkthrough of what a legitimate COA looks like, see our supplier vetting checklist.
Sourcing Alternatives When TB-500 Is Out of Stock
If TB-500 is not in stock, researchers studying tissue-repair and recovery signalling often turn to BPC-157, a 15-amino-acid peptide frequently used alongside TB-500 in the same preclinical models. Confirming availability before you commit avoids a stalled experiment.
For sourcing questions or current availability, message us on WhatsApp: +852 4419 8097.
Frequently Asked Questions
Q1: What does “TB-500 5mg” mean?
It means a vial containing 5 milligrams of lyophilized TB-500 peptide powder — a mass measurement of the research material, not a dosing figure.
Q2: Is 5mg the standard TB-500 vial size?
5mg is the most common entry-level research quantity, though 10mg and 15mg vials are also widely available.
Q3: What should I verify before buying TB-500?
Confirm the COA lists the correct molecular formula C152H252N44O42 with matching HPLC and mass-spec purity data.
Important: All products are sold strictly for laboratory and research purposes only — not for human or veterinary use. No medical, therapeutic, or dosing guidance is provided or implied. Researchers are responsible for compliance with their institution and local regulations.