Specification
Side by side
| Semax | TB-500 | |
|---|---|---|
| Class | Synthetic ACTH(4-7) analog | Synthetic thymosin beta-4 fragment |
| Residues | 7 | |
| Sizes | 10 mg | 10 mg |
Origin and target
Where each one comes from, and what it binds
Semax
Origin. A synthetic analog of the ACTH(4-7) fragment, extended with a proline-glycine-proline tail.
Target. Derived from the adrenocorticotropic hormone sequence, modified for stability against enzymatic cleavage.
Full referenceTB-500
Origin. A synthetic fragment of thymosin beta-4, a naturally occurring 43-residue protein.
Target. The parent protein is an actin-sequestering protein; the fragment carries the actin-binding motif.
Full referenceRead next
Each one on its own page
Handling
The same for both
Both ship as freeze-dried powder, both mix with bacteriostatic water the same way, and both are stored at minus 20 C out of the light until then. What differs is which breakdown route each sequence is prone to, and the stability guide shows how to read that from the amino acids.
More comparisons
Others in signalling peptides
Documentation
Both tested, both certificates published
Whichever you order, the latest lab certificate is on its product page.