Strictly for Laboratory Research Use Only. Not for human or veterinary use.
LPure99Research

Metabolic

CAS 2381089-83-2

Retatrutide

Triple GIP/GLP-1/glucagon receptor agonist peptide.

COA · Batch RTT-260804-B Verified · AR-RT-T-260804-B-RTT
  • Third-Party Tested
  • High Purity >99%
  • Lyophilized Powder
  • COA Verified
RTTLYOPHILIZED · 5MGRTT-260804-BRESEARCH USE ONLY 3D render · placeholderRTT · 5mg

Analytical data

Batch RTT-260804-B

Sample S-RTT-260804-B-B · Tested Aug 11, 2026 · Independent ISO/IEC 17025 laboratory (placeholder)

Third-party verifiedReport AR-RT-T-260804-B-RTTVerify
02468101214161820050100Retention time (min)mAU (220 nm)13.10 min · 99.31%
PeakRT (min)Area (mAU·s)Area %ID
19.902540.14Impurity
211.505710.31Impurity
313.10182,73099.31Retatrutide
414.004440.24Impurity
Column
C18, 4.6 × 250 mm, 5 µm
Gradient
5 → 65% B over 20 min (A: 0.1% TFA in water; B: 0.1% TFA in acetonitrile)
Flow rate
1.0 mL/min
Detection
UV 220 nm

Mock analytical data for demonstration. Replace with the signed, batch-specific report issued by your testing laboratory.

Chemical specifications

Retatrutide at a glance

Lot RTT-260804-B
Chemical specifications for Retatrutide
Chemical NameRetatrutide (LY3437943)
CAS #2381089-83-2
Molecular FormulaC221H342N46O68
Molecular Weight4731.3 g/mol
SequenceY-Aib-QGTFTSDYSI-αMeL-LDKK(γE-2×OEG-C20 diacid)AQ-Aib-AFIEYLLEGGPSSGAPPPS-NH2
Purity> 99% (HPLC) · this batch 99.31%
AppearanceWhite lyophilized powder

Placeholder specification data for this demo. Replace with your supplier and batch records before launch.

Overview

Retatrutide (LY3437943) is a synthetic 39-amino-acid peptide designed as a balanced agonist of the GIP, GLP-1 and glucagon receptors. The sequence incorporates α-aminoisobutyric acid substitutions for proteolytic stability and a C20 fatty diacid for an extended half-life. Supplied as a lyophilized powder for in-vitro research.

  • Triple GIP / GLP-1 / glucagon receptor agonist
  • Aib-stabilized backbone
  • HPLC purity ≥ 99% on every batch
  • Batch-specific Certificate of Analysis included

Manufacturing & characterization

01

Solid-phase synthesis

Produced by Fmoc solid-phase peptide synthesis followed by preparative RP-HPLC purification.

02

Characterized by LC-MS

Identity confirmed by electrospray mass spectrometry against the theoretical monoisotopic mass.

03

Lyophilized for stability

Freeze-dried under vacuum in sealed, nitrogen-flushed vials to preserve integrity in transit.

Molecular formula
C221H342N46O68
Molecular weight
4731.3 g/mol
CAS number
2381089-83-2
Sequence
Y-Aib-QGTFTSDYSI-αMeL-LDKK(γE-2×OEG-C20 diacid)AQ-Aib-AFIEYLLEGGPSSGAPPPS-NH2
Purity (HPLC)
> 99%
Form
Lyophilized powder
Vial sizes
5 mg · 10 mg
Solubility
Bacteriostatic water, sterile water

Values are placeholder specifications for this demo and should be replaced with your supplier data.

Customer reviews

What researchers say about Retatrutide

4.2/ 5

6 reviews · 4 verified

  • 52
  • 43
  • 31
  • 20
  • 10

Verified purchase reviews are linked to a shipped order.

  • Consistent across three lots

    Verified purchase

    We have ordered the same peptide from three different batches and the mass spec identity has been spot-on every time. Cold packs were still frozen on delivery.

    J. Lindqvist · Contract research organisation · Sep 26, 2026 · 5mg vial

  • Good product, slow courier

    Verified purchase

    Material itself is excellent and the batch documentation is thorough. Standard shipping took four days to reach us, which is at the top of the quoted window.

    R. Patel · Biotech start-up · Sep 17, 2026 · 5mg vial

  • Clear documentation

    Verified purchase

    The batch-specific COA, HPLC trace and MS spectrum are exactly what our QA team needs for incoming inspection. Saves a lot of back-and-forth.

    S. Nakamura · Quality assurance, pharma · Sep 09, 2026 · 10mg vial

  • Solid reference material

    Used as a reference standard for a receptor binding assay. Behaved as expected. Would appreciate a 1 mg size for method development.

    A. Fernández · Pharmacology department · Aug 26, 2026 · 10mg vial

  • Fine, but packaging could improve

    Verified purchase

    Peptide quality is good. The outer box arrived dented, though the insulated inner container and vials were unharmed.

    L. Moreau · Analytical services lab · Jul 30, 2026 · 5mg vial

  • Reliable supplier

    Second order with Pure99. Everything arrived labelled, cold and with the paperwork. Support answered a storage question within the hour.

    D. Schäfer · Research institute · Jun 28, 2026 · 10mg vial

Sample reviews for demonstration only.

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