FST-344 (Follistatin 344)
Research Peptide | Lyophilized Powder | Batch Tested
For laboratory research use only. Not for human or animal consumption. Insulated shipping · Styrofoam box available.
Product Overview
FST-344 (Follistatin 344) is a naturally occurring glycoprotein that binds and neutralizes members of the TGF-β superfamily, most importantly myostatin and activin. By sequestering these negative regulators, it is a key research tool for studying muscle-growth control.
Laboratory: Stand Science & Technology Pharmaceutical (Qingdao) Co., Ltd. (Stand Group)
Test results for batch 3F9SYJZC0I7C →| Test | Result |
|---|---|
| AppearanceVisual | White loose powderPass |
| IdentitySDS-PAGE | ConformsPass |
| PuritySDS-PAGE | 97.3 %Pass |
| Protein contentUV A280 | 90.6 %Pass |
| Actual fillGravimetric | 1.05 mgPass |
| Water contentKarl Fischer | 4.0 %Pass |
| Bacterial endotoxinsLAL (gel-clot) | <3 EU/mgPass |
SKU & packaging
| SKU | Per vial | Vials per pack | Pack price |
|---|---|---|---|
| FST | 1 mg | 10 | $364.00 |
Nominal sizes describe the product label; measured results are listed in each batch report. Published reports do not confirm the batch allocated to a future order.
Product & documentation questions
How do I read the size and pack quantity?
The per-vial size and number of vials per pack are listed separately in the table. The displayed price is for one pack. A blend’s stated size can describe combined ingredients; check its product label and report for individual components.
How do I find the matching COA?
Match the product, SKU and batch number with the published report. Open the batch page to read the actual results, original report and laboratory verification link. Ask support to confirm the allocated batch if it is not on your order.
Does a purity result mean every test passed?
No. Identity, purity, fill and endotoxin are separate measurements. Read each reported result and unit. An absent result is not a pass, and a less-than result is not zero.
Research Information
FST-344 is studied for its antagonism of myostatin and activin signaling and the resulting influence on muscle-cell proliferation and differentiation in models of muscle biology. Research examines how neutralizing these growth inhibitors affects muscle mass and regeneration. Supplied strictly for in-vitro and laboratory research use only — not for human or animal consumption.
Learn more
Read research overviews, COA verification guides, and reconstitution notes in our Knowledge Hub.
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