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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 AnalyticalCertificate of Analysis · Lot release · tested in-housePrymaLab Analytical · Attn: Sample intake · 3705 Music Branch Rd · Ashland, KY 41102 · United States
Certificate number PL-26-00052 Key 22HNM3TS Verify at prymalab.net/testing/verify/

IGF-1 DES(1-3) 2 mg Lot PL-2609-052 · analysed September 17, 2026 · issued October 3, 2026

Purity · RP-HPLC99.43%Specification 99.0% • main peak at 5.90 min
Identity · Observed Mass7372.1 DaTheoretical 7371.5 Da • +0.6 Da (81 ppm)
ConclusionPASSMeets every specification for the tests performed

The certificate

Certificate of analysis PL-26-00052, page 1
Page 1: results, specifications and chromatogram
Certificate of analysis PL-26-00052, page 2
Page 2: HPLC method, peak table, mass spectrometry and approval

Summary

CompoundIGF-1 DES(1-3)
Des(1-3)-IGF-1; recombinant human IGF-1 lacking the N-terminal Gly-Pro-Glu
CAS number112603-35-7
Molecular formulaC319H501N91O96S7 (reduced-chain calculation)
Theoretical mass7371.5 Da (reduced-chain calculation; 7365.4 Da with the three disulfides formed)
Sequence / structureH-TLCGAELVDALQFVCGDRGFYFNKPTGYGSSSRRAPQTGIVDECCFRSCDLRRLEMYCAPLKPAKSA-OH (67 residues; three intrachain disulfides; free N- and C-termini)
AppearanceWhite lyophilized powder
Storage−20 °C, desiccated, dark; avoid freeze–thaw
Label claim2 mg/vial
Lot numberPL-2609-052
Certificate numberPL-26-00052
Date of analysis2026-09-17 (retest 2028-09-15)
Purity (RP-HPLC)99.43%
Identity (LC-MS)7372.1 Da
Water content (KF)1.8%
Endotoxin (LAL)0.05 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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