PrymaLab AnalyticalCertificate of Analysis ยท Lot release ยท tested in-housePrymaLab Analytical ยท Attn: Sample intake ยท 3705 Music Branch Rd ยท Ashland, KY 41102 ยท United States
Certificate number
PL-26-00034
Key
U9FXNFGF
Verify at prymalab.net/testing/verify/
GDF-8 1 mg Lot PL-2609-034 ยท analysed September 18, 2026 ยท issued October 3, 2026
Purity ยท RP-HPLC99.10%Specification 99.0% โข main peak at 7.06 min
Identity ยท Observed Mass24,814.2 DaTheoretical 24,814.0 Da โข +0.2 Da (8 ppm)
ConclusionPASSMeets every specification for the tests performed
The certificate
Summary
| Compound | GDF-8 (Myostatin) Recombinant human myostatin, mature homodimer |
|---|---|
| CAS number | Not assigned |
| Molecular formula | C1100H1646N294O316S24 (homodimer; reduced-chain calculation) |
| Theoretical mass | 24,814.0 Da (reduced-chain calculation; 24,796.3 Da with the nine disulfides formed) |
| Sequence / structure | Two identical 109-residue chains (UniProt O14793 residues 267โ375): DFGLDCDEHSTESRCCRYPLTVDFEAFGWDWIIAPKRYKANYCSGECEFVFLQKYPHTHLVHQANPRGSAGPCCTPTKMSPINMLYFNGKEQIIYGKIPAMVVDRCGCS; disulfide-linked homodimer (TGF-ฮฒ cystine knot). |
| Appearance | White lyophilized powder |
| Storage | โ20 ยฐC, desiccated, dark; avoid freezeโthaw |
| Label claim | 1 mg/vial |
| Lot number | PL-2609-034 |
| Certificate number | PL-26-00034 |
| Date of analysis | 2026-09-18 (retest 2028-09-16) |
| Purity (RP-HPLC) | 99.10% |
| Identity (LC-MS) | 24,814.2 Da |
| Water content (KF) | 1.8% |
| Endotoxin (LAL) | 0.21 EU/mg |
| Sterility | No growth; conforms |
| Conclusion | PASS |
| Tested by | PrymaLab Analytical (PrymaLab's own laboratory, Ashland, KY). In-house result, not an independent third-party test. |
Third-party testing guarantee. Have this product tested by any independent laboratory. If the result does not come back as the compound named on the label, at the purity and amount stated, we refund your order in full and reimburse the cost of the test. Email the lab report and your order number to michael@prymalab.net.
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