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Selank vs Semax
Selank and Semax are both heptapeptides ending in Pro-Gly-Pro. Selank starts with Thr-Lys-Pro-Arg (the tuftsin sequence); Semax starts with Met-Glu-His-Phe (ACTH 4–7).
| Selank | Semax | |
|---|---|---|
| Also known as | Selanc, TP-7 | MEHFPGP, ACTH (4–7) Pro-Gly-Pro |
| Compound type | Heptapeptide · 7 aa | Heptapeptide · 7 aa |
| Sequence | Thr-Lys-Pro-Arg-Pro-Gly-Pro | Met-Glu-His-Phe-Pro-Gly-Pro |
| Molecular formula | C33H57N11O9 | C37H51N9O10S |
| Molecular weight | 751.9 g/mol | 813.9 g/mol |
| CAS number | 129954-34-3 | 80714-61-0 |
| PubChem CID | 11765600 | 9811102 |
| Form | Lyophilized powder | Lyophilized powder |
| Sizes | 5 mg and 10 mg | 5 mg and 10 mg |
| Price | from $28.00 | from $29.00 |
| Lab report | Not yet (supplier's spec) | Not yet (supplier's spec) |
Where they differ
- Both have 7 residues.
- The sequences differ at 4 positions: position 1 (Thr in Selank, Met in Semax); position 2 (Lys in Selank, Glu in Semax); position 3 (Pro in Selank, His in Semax); position 4 (Arg in Selank, Phe in Semax).
- Molecular formulas: Selank C33H57N11O9, Semax C37H51N9O10S.
- Molecular weights: Selank 751.9 g/mol, Semax 813.9 g/mol.
Selank
Heptapeptide · 7 aa
5 mg10 mg
from $28.00
$4.80/mg at 10 mg
Ships in 5–7 days
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Semax
Heptapeptide · 7 aa
5 mg10 mg
from $29.00
$4.60/mg at 10 mg
In stock
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