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Research Articles
All products are supplied strictly for laboratory research use. Not for human or veterinary use.
Retatrutide (CAS# 2381089-83-2) is a synthetic unimolecular peptide engineered to act as a triple agonist across the GIP, GLP-1, and glucagon receptors. NexPept supplies it as a lyophilized research reference standard for in vitro multi-receptor selectivity profiling, binding-kinetics assays, and pharmacokinetic modeling. Not for use in any living organism.
Every lot is independently tested by a third-party analytical laboratory before it is listed. The Certificate of Analysis reports HPLC purity, identity confirmation, and net-content verification, and the current lot carries an amended certificate adding bacterial endotoxin and heavy-metal results. Certificates stay published in our COA library after the batch sells out.
For background on the compound itself — the triple-receptor profile, published batch data across all three vial sizes, and what to check when sourcing — see our Retatrutide Canada guide. For wider context on this class of compound and the receptor pathways involved, see our metabolic research peptides overview.
Batch verification
Current lot
| CAS Number | 2381089-83-2 |
|---|---|
| Full Name | Retatrutide |
| Synonyms | LY3437943 |
| Compound Class | Synthetic triple-agonist peptide (GIP/GLP-1/glucagon receptor) |
| Sequence Length | 39 amino acids |
| Molecular Formula | C₂₂₁H₃₄₂N₄₆O₆₈ |
| Molecular Weight | 4,731.33 g/mol |
| Physical Form | Lyophilized powder |
| Appearance | White to off-white lyophilized solid |
| Net Quantity | 10 mg / vial |
| Analytical Method | HPLC-UV purity and identity |
| Additional Testing | Bacterial endotoxins USP <85> and heavy metals USP <233> on the current lot |
Retatrutide is studied in vitro as a unimolecular triple-agonist tool compound. Published work has examined its binding behaviour across the GIP, GLP-1, and glucagon receptors, comparative receptor-selectivity profiling, receptor-activation kinetics in cell-based assay systems, and structure–activity characterization.
As a large, structurally complex peptide, consistent identity and purity between lots matters for multi-receptor selectivity work, which is why every NexPept batch is published with its own purity figure rather than a blanket claim.
This compound has not been authorized by Health Canada for any therapeutic, clinical, or human use.
Retatrutide Canada guide — compound background, batch data across all vial sizes, and supplier evaluation
Metabolic research peptides in Canada — the compound class, receptor pathways and what the category covers
What are research peptides? — how research-grade material differs from a drug or a supplement
Buy peptides in Canada — sourcing, documentation and what to check before ordering
All metabolic research compounds — browse the full category
PubMed — Retatrutide — peer-reviewed scientific literature
NexPept COA Library — published certificates for every batch we have sold
Certificates for the lots we have shipped, newest first. The batch number on your vial matches one of these.
Retatrutide 10MG — batch NXP-RETA-02CURRENT
Tested Sep 26, 2026 · 99.63% purity · HPLC-UV · endotoxins pass (USP <85>) · heavy metals below reference limits (USP <233>)
Retatrutide 10MG — batch NP-RETA-02
Tested Aug 6, 2026 · 99.23% purity · HPLC + MS
Research Use Only. All products are intended solely for laboratory research use and are not for human or veterinary use. By purchasing, the buyer agrees to use these products in compliance with all applicable laws.
All products are intended for laboratory research use only. Not for human or veterinary use.
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Everything you need to know before ordering
Product Quality Summary is available on every product page. Independent third-party Certificates of Analysis are available upon request for select batches and may be verified directly with the testing laboratory.
Please note that all sales are final. Due to the nature of our products and inventory, we are unable to accept returns. Product quality is independently assessed via 3rd party laboratory testing to ensure quality, and all purchases made via this website are done with the implied consent that you acknowledge and accept the empirical testing provided on each product page. In the event of dissatisfaction or quality concern, please consult with us via email so that we can try to assist.
We ship to addresses within Canada only. All orders are shipped domestically via Xpress Post with Canada Post to ensure safe, discreet delivery.
Most orders ship the same business day. Orders within the Greater Toronto Area (GTA) typically arrive within 1–2 business days, while more rural or remote areas can expect 3–5 business days. FlexDelivery and PO Boxes are supported. Please note these are average delivery times — delays may occasionally occur due to courier issues or remote locations.
Every peptide product sold on our site is lab-tested before it's listed. If a product hasn't been tested, we don't sell it.
Unless otherwise noted on the product page, all NexPept research compounds are supplied as lyophilized (freeze-dried) powder for laboratory research use. Physical form and net quantity are listed individually on each product page.