Certificates of Analysis
Independent third-party lab results for each batch. Verify any batch at /verify.
10mg — per vial
RET010-001CURRENT
View COA ↗
Purity99.427%Net13.12 mgEndotoxins✓ PassProducedMay 2026
30mg — per vial
RET030-001CURRENT
View COA ↗
Purity98.95%Net30.01 mgProducedJuly 2026
For full transparency, we also publish batches that did not pass quality testing. These are not sold — click any batch to view its COA.
5mg — per vial
RET005-001FAILED
View COA ↗
Reason: Unknown Compound
Purity0%Net0 mgEndotoxins✗ FailProducedMay 2026
10mg — per vial
RET010-002FAILED
View COA ↗
Reason: Unknown Compound
Purity0%Net0 mgEndotoxins✗ FailProducedMay 2026

Retatrutide

Retatrutide is a synthetic triple-receptor agonist peptide that binds three incretin and glucagon receptors simultaneously: GIP (glucose-dependent insulinotropic polypeptide), GLP-1 (glucagon-like peptide-1), and the glucagon receptor. Each receptor mediates a distinct signaling pathway within in-vitro metabolic and endocrine research models.

Because it engages all three receptors at once, retatrutide provides researchers with a reference tool for studying combined receptor activation that single- or dual-agonist compounds cannot replicate. Reported areas of laboratory interest include receptor-binding affinity, downstream cAMP signaling, incretin pathway crosstalk, and comparative agonist studies.

As the most recently characterized compound in the GLP-1 agonist research class, retatrutide is used as a frontier reference compound in in-vitro metabolic pathway research.

This vial contains lyophilized Retatrutide at high purity, verified by independent, third-party analytical testing.

Structure, CAS and molecular data, receptor pharmacology, storage and published literature: see our Retatrutide research reference.

Price range: $65.00 through $160.00

Need bacteriostatic water? Hospira 30 mL is $19.99 (reg. $29.99) when ordered with a peptide. Add it to your cart
Ships same day M-F (order by 3 PM PT)
Batch-verified purity
For Research Use Only. Not for human or veterinary use.

Additional information

Molecular Weight4731.3 g/mol
Molecular FormulaC₂₂₁H₃₄₂N₄₆O₆₈
SequenceY-Aib-Q-G-T-F-T-S-D-Y-S-I-αMeL-L-D-K-K*-A-Q-Aib-A-F-I-E-Y-L-L-E-G-G-P-S-S-G-A-P-P-P-S-NH₂ (39 aa; αMeL = α-methyl-L-leucine; K* = Lys17 acylated with C20 diacid via γGlu-AEEA)
CAS Number2381089-83-2
AppearanceWhite to off-white lyophilized powder
Storage-20°C / -4°F (lyophilized); 4°C / 39°F reconstituted in Bacteriostatic Water, use within 28 days
SolubilitySoluble in water at 1 mg/mL
Size

5mg, 10mg, 30mg

COA & Testing

Certificates of Analysis
Independent third-party lab results for each batch. Verify any batch at /verify.
10mg — per vial
RET010-001CURRENT
View COA ↗
Purity99.427%Net13.12 mgEndotoxins✓ PassProducedMay 2026
30mg — per vial
RET030-001CURRENT
View COA ↗
Purity98.95%Net30.01 mgProducedJuly 2026
For full transparency, we also publish batches that did not pass quality testing. These are not sold — click any batch to view its COA.
5mg — per vial
RET005-001FAILED
View COA ↗
Reason: Unknown Compound
Purity0%Net0 mgEndotoxins✗ FailProducedMay 2026
10mg — per vial
RET010-002FAILED
View COA ↗
Reason: Unknown Compound
Purity0%Net0 mgEndotoxins✗ FailProducedMay 2026

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Research Summary: The following information is provided for research context only.

Retatrutide is a synthetic triple-receptor agonist peptide that binds three incretin and glucagon receptors simultaneously: GIP (glucose-dependent insulinotropic polypeptide), GLP-1 (glucagon-like peptide-1), and the glucagon receptor. Each receptor mediates a distinct signaling pathway within in-vitro metabolic and endocrine research models.

Because it engages all three receptors at once, retatrutide provides researchers with a reference tool for studying combined receptor activation that single- or dual-agonist compounds cannot replicate. Reported areas of laboratory interest include receptor-binding affinity, downstream cAMP signaling, incretin pathway crosstalk, and comparative agonist studies.

As the most recently characterized compound in the GLP-1 agonist research class, retatrutide is used as a frontier reference compound in in-vitro metabolic pathway research.

This vial contains lyophilized Retatrutide at high purity, verified by independent, third-party analytical testing.

Structure, CAS and molecular data, receptor pharmacology, storage and published literature: see our Retatrutide research reference.

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