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Retatrutide 20MG
$160.00
CAD
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Overview
Properties
Research
Lab Results
FAQ
Retatrutide 20MG overview
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.
✓
99.81% HPLC purity on the current lot✓
Identity confirmed by the testing laboratory✓
Bacterial endotoxins passed, USP <85>✓
Heavy metals below reference limits, USP <233>✓
Batch number printed on every vial✓
Certificate published, not available on requestStudied in vitro for
Batch verification
Current lot
Third-party lab verified
HPLC · endotoxin · heavy metals
BatchNXP-RETA-001
TestedOct 22, 2026
Purity99.81%
✓
Bacterial endotoxins — PassWithin threshold · USP <85> gel-clot LAL
✓
Heavy metals — PassAs, Cd, Pb, Hg below reference limits · USP <233>
Properties
| 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 | 20 mg / vial |
| Analytical Method | HPLC-UV purity and identity |
| Additional Testing | Bacterial endotoxins USP <85> and heavy metals USP <233> on the current lot |
Research context
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.
Further reading
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
Lab results
Certificates for the lots we have shipped, newest first. The batch number on your vial matches one of these.
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.
Frequently asked questions
What testing does each batch go through?
Identity and purity are confirmed by high-performance liquid chromatography before a lot is listed. The current lot, NXP-RETA-001, tested at 99.81% on October 22, 2026, and its amended certificate adds bacterial endotoxin and heavy-metal results. If a lot has not been tested, it does not go on sale.
Does this lot carry endotoxin and heavy-metal testing?
Yes. Bacterial endotoxins were measured by gel-clot LAL under USP <85> against the reference threshold, which the laboratory recorded as a pass. Heavy metals were measured under USP <233>: arsenic, cadmium, lead and mercury all came back below the USP <232> / ICH Q3D reference limits printed on the certificate. These are analytical measurements on the material as supplied; they do not change its research-use-only status, and the laboratory draws no conclusion on safety or fitness for use.
What class of compound is Retatrutide?
A synthetic unimolecular peptide engineered to engage the GIP, GLP-1, and glucagon receptors, used as a research tool compound in multi-receptor selectivity work. It is supplied as a lyophilized powder and handled as a peptide reference standard, not as a formulation. Our Retatrutide Canada guide covers the compound in more depth.
How does the 20MG vial differ from the 10MG and 50MG?
What physical form does it arrive in?
A white to off-white lyophilized (freeze-dried) solid, sealed in a single vial. Net quantity is 20mg. No preparation, reconstitution or handling instructions are supplied; those are determined by qualified personnel under your own institutional protocols.
All products are intended for laboratory research use only. Not for human or veterinary use.
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Frequently Asked Questions
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.