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Retatrutide
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retatrutide

new
99.101% HPLC
Triple agonist

Retatrutide (LY3437943) is a synthetic 39-amino-acid peptide — a single-chain, lipidated analog engineered on a glucose-dependent insulinotropic polypeptide (GIP) backbone that engages the GLP-1, GIP and glucagon receptors, incorporating 2-aminoisobutyric-acid substitutions, an α-methyl-leucine residue, a C20 fatty-diacid moiety conjugated at a lysine, and a C-terminal amide. In published preclinical and clinical literature it has been investigated as a candidate molecule in metabolic-regulation and body-weight research. Supplied lyophilized at ≥99% HPLC purity with a per-lot Certificate of Analysis. For laboratory and research use only — not for human or animal consumption. ROEHN makes no claims regarding its effects.

Strength
1
Lot RET0601052026-R99.101% purity by HPLC · assayed Jan 7, 2026Verify →
Free cold-chain shipping over $150 · independent LC-MS/MS testing · signed COA
RUO — For research use only. Not for human or animal consumption.

A single-molecule tri-agonist peptide investigated in METABOLIC-REGULATION research.

Compound
Retatrutide (LY3437943)
CAS number
2381089-83-2
Molecular formula
C₂₂₁H₃₄₂N₄₆O₆₈
Molecular weight
4731.33 g/mol
Sequence
Synthetic 39-amino-acid GIP-based analog; Aib substitutions, α-methyl-leucine, C20 fatty-diacid conjugated at a lysine residue, C-terminal amide
UNII
NOP2Y096GV
ChEMBL ID
ChEMBL5095485
Purity
≥99% by reverse-phase HPLC
Identity
Confirmed by mass spectrometry (ESI-MS)
Form
Lyophilized powder
Testing
Independent HPLC-UV + LC-MS/MS — Freedom Diagnostics
Research use
Laboratory research only — not for human or animal consumption
Made with
retatrutide
lyophilized
Application
Reconstitute with bacteriostatic water per your research protocol.
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Laboratory handling

Reconstitution, storage & aseptic handling guidance for Retatrutide — reagent preparation notes for the lab bench.

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Assayed results — lot RET0601052026-R
99.101%
Purity by HPLC, as assayed by Freedom Diagnostics
6.28 mg
Net peptide content recovered per vial
Jan 7, 2026
Date assayed · accession 2601060001
Figures are this lot's own assayed results, reproduced from the signed certificate as Freedom Diagnostics reported them. Analytical results only — they describe the material, not any physiological outcome. Research use only.

verified, not promised.

Enter the lot code from your roehn vial to pull its Certificate of Analysis: independent purity and identity results, published exactly as the lab reported them. Lots still in testing say so. Research use only.

View lot RET0601052026-R certificate →

customer reviews

4.5
average from 2 reviews

Ratings are 1–5. Reviews appear as written, after moderation for spam and off-topic content. They describe ordering, packaging and service — not any physiological outcome.

Easy to order and complete purchase

Easy to order and complete purchase. I have been ordering from them since January 2026 and have received every order on time with no issues. The products are verifiably third party tested and work as they should.

Dave ByrneUSJun 8, 2026
Very good

Very good. Great products. Turnaround time was just a tad slow.

Nadia BennettUSFeb 9, 2026