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Published lot certificate Issued by PrymaLab Analytical for a PrymaLab production lot. Scan the QR code or enter the number and key on the verify page to confirm any printed copy.
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PrymaLab
PrymaLab AnalyticalCertificate of Analysis · Lot release · tested in-housePrymaLab Analytical · Attn: Sample intake · 3705 Music Branch Rd · Ashland, KY 41102 · United States
Certificate number PL-26-00003 Key DWUV94CU Verify at prymalab.net/testing/verify/

ACE-031 1 mg Lot PL-2609-003 · analysed September 19, 2026 · issued October 3, 2026

Purity · RP-HPLC98.1%Specification ≥ 95.0% (SDS-PAGE corroboration) • main peak at 7.38 min
Identity · Observed Mass72,529 DaDeconvoluted glycoform centroid • spec ≤ 75,000 Da (unreduced dimer)
ConclusionPASSMeets every specification for the tests performed

The certificate

Certificate of analysis PL-26-00003, page 1
Page 1: results, specifications and chromatogram
Certificate of analysis PL-26-00003, page 2
Page 2: HPLC method, peak table, mass spectrometry and approval

Summary

CompoundACE-031
ActRIIB-Fc decoy receptor: soluble activin receptor type IIB extracellular domain fused to human IgG1 Fc
CAS numberNot assigned
Molecular formulaNot applicable (recombinant glycoprotein)
Theoretical massGlycoform-dependent; unreduced Fc-fusion homodimer about 72–75 kDa
Sequence / structureRecombinant human ActRIIB extracellular domain fused to human IgG1 Fc (hinge–CH2–CH3), CHO-expressed; covalent homodimer through the Fc hinge disulfides; N-glycosylated. Binds GDF-8/GDF-11, activin A and BMP-9/10.
AppearanceWhite lyophilized powder
Storage−20 °C, desiccated, dark; avoid freeze–thaw after reconstitution
Label claim1 mg/vial
Lot numberPL-2609-003
Certificate numberPL-26-00003
Date of analysis2026-09-19 (retest 2028-09-18)
Purity (RP-HPLC)98.1%
Identity (LC-MS)72,529 Da (dimer); 36,268 Da on reduction
Water content (KF)2.1%
Endotoxin (LAL)0.31 EU/mg
SterilityNo growth; conforms
ConclusionPASS
Tested byPrymaLab 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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