NEW ENGLAND JOURNAL OF MEDICINE
Triple-Hormone-Receptor Agonist Retatrutide for Obesity — A Phase 2 Trial
2023 · DOI: 10.1056/NEJMoa2301972
Jastreboff AM, et al.
View SourceNext same-day shipping cutoff in --:--:--Weekdays · order before 3 PM ET

Retatrutide is listed for laboratory research use only. Review its GLP-1/GIP/glucagon receptor-agonist classification, CAS 2381089-83-2, C221H342N46O68 molecular formula, 4731.4 Da reference molecular mass, documented lot, purity COA, endotoxin report, and storage expectations before placing a research order.
Retatrutide is listed as CAS 2381089-83-2 with molecular formula C221H342N46O68 and a reference molecular mass of 4731.4 Da. This page also lists the category, SKU, stock status, and lot-specific documentation available before checkout.
The linked lab records include a purity COA and endotoxin report for documented lot A1015. Researchers can also review the lab reports index and COA reading guide.
No. Each published Retatrutide result is tied to documented lot A1015 and the selected vial size. Match the lot identifier and strength on the report to the vial or order record rather than treating one report as a universal result.

Everything ships from our US fulfillment center. Order before 3pm ET on a weekday for same-day shipping when inventory is available, otherwise the next business day. Most domestic orders arrive in 2 to 5 business days.
This product page links the available Certificate of Analysis from an independent lab where available, including purity and identity documentation before purchase.
Lyophilized peptides require appropriate laboratory handling and reconstitution materials for research workflows. Review the product specifications and your laboratory's handling requirements before ordering.
Each order ships with the lyophilized vial(s) you selected, an order summary, tracked shipping, and access to available batch documentation. Orders over $200 include free shipping.
Sealed lyophilized vials are stable at room temperature for transit and short-term storage. For longer-term storage, refrigerate at 2-8°C. Once reconstituted with bacteriostatic water, store refrigerated and use within 2 to 4 weeks.
We accept all major credit and debit cards (Visa, Mastercard, American Express, Discover) processed securely through our payment partner. No card details are stored on our servers.
We currently ship within the United States only. International shipping isn't offered at this time due to customs and regulatory complexity around research compounds.
Lyophilized vials are stable at room temperature for transit. We pack in insulated padded mailers with USPS or UPS tracked shipping. Refrigerate on arrival, and reconstitute only when ready for laboratory use.
For laboratory research purposes only. Not intended for human consumption.
GLP-RT
Technical specifications
Lyophilized (powder)
-20°C · 24+ months
Reconstituted
2-8°C · ~30 days
Peer-reviewed research
NEW ENGLAND JOURNAL OF MEDICINE
2023 · DOI: 10.1056/NEJMoa2301972
Jastreboff AM, et al.
View SourceTHE LANCET
2023
Rosenstock J, et al.
View SourceNATURE MEDICINE
2024
Sanyal AJ, et al.
View SourceLANCET DIABETES & ENDOCRINOLOGY
2025
Coskun T, et al.
View SourcePUBCHEM DATABASE
CLINICALTRIALS.GOV


Check your age.
Start shopping.