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-26-00314
Key
9T7X6VSQ
Verify at prymalab.net/testing/verify/
TB-500 5 mg/mL Pen Lot PL-2610-201 ยท analysed October 8, 2026 ยท issued October 22, 2026
Purity ยท RP-HPLC99.50%Specification โฅ 99.0% โข main peak at 14.77 min
Identity ยท Observed Mass4,963.43 DaTheoretical 4,963.44 Da โข โ0.01 Da (2 ppm)
ConclusionPASSMeets every specification for the tests performed
The certificate
Summary
| Compound | TB-500 N-acetyl thymosin ฮฒ4, full-length 43-residue peptide |
|---|---|
| CAS number | 77591-33-4 |
| Molecular formula | C212H350N56O78S |
| Theoretical mass | 4,963.44 Da |
| Sequence / structure | Ac-43-aa Tbeta4 |
| Storage | โ |
| Label claim | 5 mg/mL |
| Lot number | PL-2610-201 |
| Certificate number | PL-26-00314 |
| Date of analysis | 2026-10-08 (retest 2028-10-07) |
| Purity (RP-HPLC) | 99.50% |
| Identity (LC-MS) | 4,963.43 Da |
| Endotoxin (LAL) | 0.158 EU/mg |
| Sterility | No growth |
| 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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