TB-500 is the synthetic active fragment of Thymosin Beta-4 (MW 887.0 Da), studied for actin regulation and systemic tissue repair. It is supplied as a lyophilized powder; verifying it is the correct fragment (not full-length TB4) matters.
What to Look for When Sourcing TB-500
Require a third-party COA (HPLC and mass spectrometry) confirming ≥98% purity and the 887.0 Da molecular weight — this confirms you are getting the TB-500 fragment rather than a mislabeled or full-length product.
Typical Price Range
Research-grade TB-500 typically costs about $40–$60 per vial. It is more expensive than smaller peptides; prices well below this range are a warning sign.
Storage and Handling
Store lyophilized TB-500 at 2–8°C. Once reconstituted, refrigerate and use within the vendor's stated stability window.
Red Flags to Avoid
Missing COAs, mislabeling as full-length Thymosin Beta-4, vague sourcing, undocumented purity claims, or human-use claims.
Top Recommended Source
Purgo Labs is our top-rated source based on third-party COA verification, research-grade purity, and transparent manufacturing. View at Purgo Labs.