Semaglutide

Semaglutide is a synthetic lipidated peptide. Supplied as a lyophilised powder in a sealed vial for laboratory research. Available in 15 mg and 20 mg presentations.

In stock

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

Concentration

20 mg vial£59.00

Quantity

Order before 3pm for same-day dispatch.

Cut-off 3pm, Mon–Sat

20 mg · £59.00

Independent report by PeptideVerify · HPLC + LC-MS

issued 19 August 2026

About Semaglutide

Semaglutide is a synthetic lipidated peptide of thirty-one amino acid residues and, by receptor class, a GLP-1 receptor agonist peptide. Two modifications distinguish it from an unmodified chain. Position 2 is α-aminoisobutyric acid (Aib), a non-proteinogenic residue with two methyl groups on its α-carbon. The side chain of the lysine at position 20 carries an octadecanedioic (C18) diacid, attached through a γ-glutamic acid residue and two short ethylene-glycol-based spacer units. The C-terminal residue is a glycine with a free carboxylic acid.

The catalogue lists CAS number 910463-68-2, the molecular formula C187H291N45O59 and a molecular weight of 4113.58 g/mol. Identity is confirmed by electrospray mass spectrometry, deconvoluted from multiply charged ions to a neutral mass, and reversed-phase HPLC gives the chromatographic profile. Each presentation is supplied as a lyophilised powder in a sealed vial.

Identifiers

PubChem CID 56843331

Product information

CAS number: 910463-68-2
Molecular formula: C187H291N45O59
Molecular weight: 4113.58 g/mol
Appearance: White to off-white lyophilised powder
Purity: ≥99% (HPLC)
Net content: 15 mg or 20 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.

Semaglutide is a synthetic lipidated peptide. Supplied as a lyophilised powder in a sealed vial for laboratory research. Available in 15 mg and 20 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: 15 mg and 20 mg
Certificate of analysis: Download — issued 19 August 2026

Questions about Semaglutide

Semaglutide is a synthetic lipidated peptide. It is supplied in a sealed vial as a white to off-white lyophilised powder, in 15 mg and 20 mg presentations.

Semaglutide is listed with CAS number 910463-68-2, molecular formula C187H291N45O59 and molecular weight 4113.58 g/mol. The same values appear in the specifications on this page.

Yes. Semaglutide is independently tested by PeptideVerify (HPLC and LC-MS). The report, issued 19 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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