Follistatin 344

Follistatin is a single-chain protein that binds activin, myostatin and related TGF-beta family members.

Purity, content and identity from $250 per vial. Endotoxin, sterility and heavy metals at Gold and Elite. Results in 3 to 5 business days; sterility 14 days.

Compound data

not registered

not registered

about 31,600 g/mol backbone (FDA GSRS calculated, unglycosylated mature chain)

Protein

Sequence and names

Sequence: FS-344 is the 344-residue precursor (UniProt P19883); after the 29-residue signal peptide the secreted protein is 315 residues with 15 disulfide bonds

Other names: FS-344, FST, activin-binding protein

Vendors use ‘344’ for both the precursor and the secreted 315-residue protein. State which you have.

How we test it

Every level includes purity, quantity, identity and a solubility check. Pick the level that matches what you need to know.

$250

Purity and quantity by reversed-phase HPLC with the detector matched to the compound, identity against a reference standard, solubility check. 1 vial.

$550

Silver plus endotoxin (USP 85) and sterility (USP 71). 3 vials.

$700

Gold plus heavy metals by ICP-MS and a fentanyl screen. 4 vials.

Turnaround and reporting

Purity, quantity and identity are reported in 3 to 5 business days after the samples are logged in. Sterility adds a 14-day incubation, and you get a preliminary COA while it runs. The COA carries a QR code that opens the current version of the report on verifiedbyvanguard.com.

Order

Start an order online, or send the compound name and the tests you need for a quote.