Research / Retatrutide documentation checklist — identity, COA and lot verification

September 7, 2026

Retatrutide documentation checklist — identity, COA and lot verification

A documentation-first checklist for Canadian laboratories receiving Retatrutide Research Use Only: identity fields, COA verification, lot matching, and shipping terms. 21+.

This checklist helps Canadian laboratories verify Retatrutide documentation before and after purchase. All Hermetica Retatrutide is Research Use Only: not for human or veterinary use, 21+ to purchase. Nothing here discusses dosing, administration, therapy, or any effect in humans or animals.

Key takeaways

Question	Short answer	Source
Is Retatrutide sold here?	Yes: Retatrutide 5mg and 10mg, Research Use Only, purchasers 21+	Retatrutide 10mg
CAS number	2381089-83-2	Catalogue label
Certificate	Freedom Diagnostics COA #2604070133, Lot M26S012, 99.86% HPLC-MS; covers both sizes	COA library
Research code	LY3437943, described in 2022 as a triple glucagon, GIP and GLP-1 receptor agonist	Coskun et al. 2022
Shipping	Flat $15 CAD, free on orders of $150 or more; typical transit 5 to 12 business days	Shipping policy

Identity fields to verify

Compound name: Retatrutide (LY3437943 research designation in supplier literature).
CAS number: 2381089-83-2 should appear on the certificate or product documentation.
Molecular formula and weight: confirm the COA fields match the reference entry for the peptide sequence.
Form: lyophilized powder in a sealed research vial.

COA verification steps

Match the lot or accession number on the vial label to the posted certificate.
Confirm the analytical method: HPLC purity per lot, with mass spectrometry identity confirmation where published.
Confirm the issuing laboratory is named on the certificate — Hermetica lots are tested by Janoshik Analytical or Freedom Diagnostics.
Retain the certificate with your laboratory records for the lot received.

Catalogue — buy path (Canada)

Retatrutide 5mg
Retatrutide 10mg
Full catalogue: Shop
Lot documentation: Certificates of Analysis

Catalogue and shipping

Full catalogue: Shop all research peptides
Certificates: COA index and Shipping policy
Canada shipping: flat $15 CAD per order, free on orders of $150 CAD or more. Typical transit is 5-12 business days within Canada, discreet plain packaging, CAD pricing.

Disclaimer

All Hermetica materials are for in-vitro laboratory research only. This page does not authorize, imply, or discuss administration, dosing, therapy, or any effect in humans or animals. Not approved by Health Canada for any therapeutic purpose. Must be 21+ to purchase.

Frequently asked questions

What documents should I check for Retatrutide?

Check the compound name, unit size, CAS 2381089-83-2 and lot number on the vial, then match the lot to the Freedom Diagnostics certificate and verify that certificate with the laboratory.

Does Hermetica sell Retatrutide in Canada?

Yes. Hermetica lists Retatrutide 5mg and 10mg as Research Use Only laboratory reagents for purchasers 21 and older. They are not for human or veterinary use.

Does Hermetica's Retatrutide have a COA?

Yes. Freedom Diagnostics issued COA #2604070133 for lot M26S012, reporting 99.86% purity by HPLC-MS. The same certificate covers the 5mg and 10mg lines.

What is the CAS number for Retatrutide?

The catalogue lists CAS 2381089-83-2. Record it alongside the lot number and certificate number in the receiving log.

Does this page give dosing or usage information?

No. It covers identity, labelling and certificate checks for laboratory records only.

References

Coskun T, Urva S, Roell WC, Qu H, Loghin C, Moyers JS, et al. (2022). LY3437943, a novel triple glucagon, GIP, and GLP-1 receptor agonist for glycemic control and weight loss: from discovery to clinical proof of concept. Cell Metabolism, 34(9), 1234–1247.e9. doi:10.1016/j.cmet.2022.07.013
D'Hondt M, Bracke N, Taevernier L, Gevaert B, Verbeke F, Wynendaele E, De Spiegeleer B. (2014). Related impurities in peptide medicines. Journal of Pharmaceutical and Biomedical Analysis, 101, 2–30. doi:10.1016/j.jpba.2014.06.012
International Council for Harmonisation. (2023). ICH Q2(R2) Guideline on validation of analytical procedures, Step 5 (EMA/CHMP/ICH/82072/2006). ema.europa.eu (PDF)
Roux S, Zékri E, Rousseau B, Paternostre M, Cintrat JC, Fay N. (2008). Elimination and exchange of trifluoroacetate counter-ion from cationic peptides: a critical evaluation of different approaches. Journal of Peptide Science, 14(3), 354–359. doi:10.1002/psc.951

Research Use Only. Not for human or veterinary use. Purchasers must be 21 or older.

Research Use Only

All content is provided for informational purposes for qualified researchers working with research materials in a laboratory setting. Products supplied by Hermetica Research Labs are sold strictly for in-vitro research. They are not intended for human or veterinary use, and nothing on this page constitutes medical, health, or dosing guidance. Must be 21+ to purchase.