Name: Retatrutide
Brand: Reserve Research
Price: 160.00 USD
Availability: InStock

Retatrutide

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Add bacteriostatic waterHospira 30 mL multi-dose vial — $19.99 ~~$29.99~~10 mL single-use ampoule — $7.50

10-vial kitSave 30%

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30% off each complete set of 10 vials of the same size. Coupon codes can’t be combined with kit pricing.

All sales final; damaged or incorrect items are replaced when reported within 7 days. Quality policy · For research use only, not for human or veterinary use.

Retatrutide is a synthetic triple-receptor agonist targeting the GIP, GLP-1, and glucagon receptors simultaneously. It is used as a reference compound in in-vitro research studying combined incretin and glucagon receptor signaling. For research use…

Research background, specifications & storage

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Batch documentation: see COA & Testing tab

For Research Use Only. Not for human or veterinary use.

Additional information

Molecular Weight	4731.3 g/mol
Molecular Formula	C₂₂₁H₃₄₂N₄₆O₆₈
Sequence	Y-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 Number	2381089-83-2
Appearance	White to off-white lyophilized powder
Storage	-20°C / -4°F (lyophilized); 4°C / 39°F reconstituted in Bacteriostatic Water, use within 28 days
Solubility	Soluble in water at 1 mg/mL

Size	10mg, 30mg

COA & Testing

Independent third-party lab reports for the batches shown below. Only results the laboratory reported for that batch are shown. Look up any vial code or browse all products at batch reports.

10 mg

RET010-001Current batch — shipping now

Purity: 99.427%
Measured peptide content: 13.12 mg per vial
Endotoxin test: Pass
Produced: May 2026

View report Laboratory copy ↗

30 mg

RET030-001Current batch — shipping now

Purity: 98.95%
Measured peptide content: 30.01 mg per vial
Produced: July 2026

View report Download PDF

Batches that did not pass testing

Published for transparency. These batches were never sold.

RET010-002Did not pass — not sold

Produced: May 2026
Reason: Did not pass QC; details not published

RET005-001Did not pass — not sold

Purity: 0%
Measured peptide content: 0 mg per vial
Endotoxin test: Pass
Produced: May 2026
Reason: Purity 0%, net content 0 mg, LC-MS identity: unknown compound

View report Laboratory copy ↗

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.

Lyophilized Retatrutide. The currently listed batch for each size has an independent third-party lab report in the COA & Testing tab. Each RR vial has a QR code linking to its batch’s independent COA.

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

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Additional information