◆COA certified · every batch tested◆Same-day shipping on orders placed by 2:00 PM CT◆Now shipping to Canada◆New Zealand sourced · USA tested · shipped worldwide◆4.9/5 from 2,400+ verified researchers◆≥99% purity — HPLC + mass spec◆Endotoxin tested · sterility verified◆COA certified · every batch tested◆Same-day shipping on orders placed by 2:00 PM CT◆Now shipping to Canada◆New Zealand sourced · USA tested · shipped worldwide◆4.9/5 from 2,400+ verified researchers◆≥99% purity — HPLC + mass spec◆Endotoxin tested · sterility verified◆COA certified · every batch tested◆Same-day shipping on orders placed by 2:00 PM CT◆Now shipping to Canada◆New Zealand sourced · USA tested · shipped worldwide◆4.9/5 from 2,400+ verified researchers◆≥99% purity — HPLC + mass spec◆Endotoxin tested · sterility verified◆COA certified · every batch tested◆Same-day shipping on orders placed by 2:00 PM CT◆Now shipping to Canada◆New Zealand sourced · USA tested · shipped worldwide◆4.9/5 from 2,400+ verified researchers◆≥99% purity — HPLC + mass spec◆Endotoxin tested · sterility verified
Tested and shipped from the USAShipped worldwide, including the UKNew Zealand sourced
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Back to PE 22-28

Becker Global Labs

Analytical Services · Austin, TX · USA

Certificate of Analysis

Doc COA-PE2228-260528-01

Verification COA4859

PE 22-28

10 mg · Lot PE2228-260528-01 · Batch 4859

Lot numberPE2228-260528-01
Batch number4859
Fill size10 mg
AppearanceWhite lyophilized powder
Molecular weight773.9 g/mol
Storage-20°C, protect from light
Sample receivedJune 1, 2026
Date of analysisJune 17, 2026
Retest dateJun 17, 2028
StatusReleased

Analytical results

  • Identity: PE 22-28

    Method
    LC-MS/MS
    Spec
    PE 22-28
    Result
    PE 22-28

  • Content

    Method
    HPLC quantitation
    Spec
    10 mg
    Result
    10.21 mg

  • Overall purity

    Method
    RP-HPLC (214 nm)
    Spec
    ≥ 99.0%
    Result
    99.9%

  • Endotoxin

    Method
    USP <85>
    Spec
    < 0.5 EU/mL
    Result
    <0.05 EU/mL

  • Heavy metals

    Method
    USP <232>
    Spec
    ≤ 10 ppm
    Result
    <0.01ppm

  • Retention time

    Method
    RP-HPLC (214 nm)
    Spec
    Report result
    Result
    8.916 min

  • Molecular weight

    Method
    LC-MS/MS
    Spec
    Consistent with theoretical mass
    Result
    773.9 g/mol

  • Appearance

    Method
    Visual
    Spec
    White lyophilized powder
    Result
    Conforms

HPLC chromatogram retention time: 8.916 min · Identity confirmed via LC-MS/MS

Verify this lot

See QR on bottle — this is the same code.

https://beckergloballabs.com/coa/pe-22-28?lot=PE2228-260528-01

Testing laboratory

Bioviridian — Austin, Texas, USA

https://bioviridians.com/coa-search.html

Conclusion

This lot conforms to all release specifications listed above.

Approved by

Signature of Katherine G. Katsaras, PhD

Katherine G. Katsaras, PhD

Quality Control Manager · June 17, 2026

For laboratory and research use only. Not for human or veterinary use.