FST-344 (Follistatin 344) — research protein that antagonizes myostatin and activin. Muscle pathway research.

FST-344 is the 344-amino-acid isoform of follistatin — a research protein that antagonizes activin and myostatin signaling by directly binding these ligands.
FST-344 acts as a soluble decoy receptor, binding myostatin and activin with high affinity and preventing their interaction with cell-surface receptors.
Used in: myostatin antagonism research, activin pathway studies, muscle research, comparative follistatin isoform studies.
| Compound | FST-344 (Follistatin 344) |
| Available Strengths | 1mg |
| Purity | ≥99% (verified by HPLC) |
| Form | Lyophilized powder |
| Storage | -20°C, protected from light |
| Reconstitution | Bacteriostatic water (sold separately) |
| Shelf Life | 36 months (lyophilized, properly stored) |
| Certificate of Analysis | Available upon request — contact us |
Add bacteriostatic water slowly. Use within 28 days.
Lyophilized: -20°C. Reconstituted: 2-8°C.
For research use only. Not for human consumption.