GLP-3

GLP-3 is retatrutide, a synthetic lipidated peptide. Supplied as a lyophilised powder in a sealed vial for laboratory research. Available in 10 mg, 20 mg, 30 mg and 40 mg presentations.

In stock

Purity: ≥99% (HPLC)
Independent report: PublishedPeptideVerify

Concentration

30 mg vial£110.00

Quantity

Order before 3pm for same-day dispatch.

Cut-off 3pm, Mon–Sat

30 mg · £110.00

Independent report by PeptideVerify · HPLC + LC-MS

issued 6 August 2026

About GLP-3

GLP-3 (retatrutide) is a synthetic lipidated peptide: a chain of amino acid residues with a lipid group covalently attached. It belongs to the Incretin & Amylin Analogues research area, alongside other lipidated peptide analogues.

The catalogue lists CAS number 2381089-83-2, the molecular formula C221H342N46O68 and a molecular weight of 4731.4 g/mol. The formula describes the whole conjugate, peptide chain and lipid group together, and at this mass the molecule sits between short synthetic peptides and small proteins. Its identity is confirmed by electrospray mass spectrometry, in which it appears as a series of multiply charged ions that are deconvoluted to a single neutral mass for comparison with the expected value, while reversed-phase HPLC gives the chromatographic profile. Each presentation is supplied as a lyophilised powder in a sealed vial.

Product information

Synonym: retatrutide
CAS number: 2381089-83-2
Molecular formula: C221H342N46O68
Molecular weight: 4731.4 g/mol
Appearance: White to off-white lyophilised powder
Purity: ≥99% (HPLC)
Net content: 10 mg, 20 mg, 30 mg or 40 mg per vial
Storage (sealed vial): Store at 2–8 °C short term, or at −20 °C and below for long-term storage. Protect from light and avoid repeated freeze-thaw cycles
Research use: For laboratory research use only. Not for human or veterinary use.

GLP-3 is retatrutide, a synthetic lipidated peptide. Supplied as a lyophilised powder in a sealed vial for laboratory research. Available in 10 mg, 20 mg, 30 mg and 40 mg presentations. Independent report by PeptideVerify (HPLC and LC-MS), published in the COA Library. Store the sealed vial at 2–8 °C for short-term storage, or at −20 °C and below for long term. Protect from light and avoid repeated freeze-thaw cycles. For research use only. Not for human or veterinary use. Sold strictly for in-vitro laboratory research; not for diagnosis or treatment.

Testing: Independent report by PeptideVerify · HPLC + LC-MS, published on this page and in the COA Library
Presentations covered: 10 mg, 20 mg, 30 mg and 40 mg
Certificate of analysis: Download — issued 6 August 2026

Questions about GLP-3

GLP-3 is retatrutide, a synthetic lipidated peptide. It is supplied in a sealed vial as a white to off-white lyophilised powder, in 10 mg, 20 mg, 30 mg and 40 mg presentations.

GLP-3 is listed with CAS number 2381089-83-2, molecular formula C221H342N46O68 and molecular weight 4731.4 g/mol. The same values appear in the specifications on this page.

Yes. GLP-3 is independently tested by PeptideVerify (HPLC and LC-MS). The report, issued 6 August 2026, can be downloaded from the Independent testing section of this page and from the COA Library.

Open the COA Library

Store at 2–8 °C short term, or at −20 °C and below for long-term storage. Protect from light and avoid repeated freeze-thaw cycles.

Orders placed before 3pm Mon–Sat are packed the same working day and handed to Royal Mail Tracked 24. Delivery is free to any UK address, and Royal Mail Tracked 24 delivers the next working day after dispatch.

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