Semaglutide

Purity>99.92%

In stock · 25 pcs.

Buy 2, get the 3rd free

Size

The batch you'll receive

Batch: B-2026-SEMA-20-002

Lab: MZ Biolabs

Purity: >99.92%

Test date: 22.09.2026

View this batch's certificate of analysis

Verify batch B-2026-SEMA-20-002 authenticity

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For research use only

This product is sold as a reagent for laboratory research and is not intended for administration to humans or animals.

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Quality guarantee

Batches are independently lab-tested. For research use only.

Materials & documentation

Monograph: Semaglutide Documentation: Semaglutide: reagent form, reconstitution and storage

Materials & documentation

About

In brief: Semaglutide (INN: semaglutide) on Longeva is a lyophilized powder in a glass vial, research use only (RUO), supplied in 5 mg, 20 mg, and 50 mg vials. On this page you can pick a fill size and check availability and price. The label carries the substance and fill size; batch quality is confirmed by an independent COA per LOT.

Batch verification by COA

Find the LOT number on the vial and the outer packaging.
Open the PDF for this substance in the COA archive.
Check the substance name, the methods (HPLC, identity), and the units of the results.
Record the date of receipt and the link to the PDF in your batch log.

Batches are accompanied by a COA from an independent third-party laboratory — check your LOT in the open archive; the report confirms the analytics at the time of testing, not the medical status of the material.

What we sell: a research RUO sample of the semaglutide molecule, a modified GLP-1 analogue and long-acting agonist of the glucagon-like peptide-1 receptor. Clinical programmes studied it in controlled protocols, among them STEP for body weight control and SUSTAIN for glycaemic control in type 2 diabetes. This is mechanistic context for the class, not a promise of an effect from an RUO vial and not an instruction for human use.

Ozempic, Wegovy, Rybelsus — and why this is not the same thing

This is not Ozempic, not Wegovy, and not Rybelsus. Those names are trademarks of finished, registered medicines containing semaglutide in different forms (injectables and an oral tablet); they carry medical labelling and belong to a different product class than an RUO lyophilizate. Longeva does not manufacture, sell, or represent these brands. Each name has its own write-up on how that brand differs from the molecule we supply.

Documentation and storage

Storage conditions per your lab's SOP, the specification, and other batch-level details are covered on the documentation page — that's where the current numbers live, along with what they mean for your protocol; record transport and post-receipt storage conditions in your internal batch log.

Comparisons and further reading

For a structural comparison, see tirzepatide (Tirzepatide); among the neighbouring samples there is also liraglutide (Liraglutide), sold under the Saxenda brand — the difference is covered in Saxenda ↔ liraglutide, and the oral Rybelsus line versus the RUO lyophilizate is covered in Rybelsus vs RUO. The rest of the class is in the GLP-1 agonist category.

The full description of the class — receptor, mechanism, weekly profile — is in the wiki reference for the molecule: it describes the molecule as a class, not a specific vial; fill size, availability, and RUO status are covered by this product card, and what is actually in your LOT is shown only by the COA. Before formulating a protocol, record your research aim, model, reference control, and acceptance criterion — that's the basis for comparing against your batch's COA data.

Reference material. Not medical advice. The sample is intended for laboratory research only (RUO). Ozempic, Wegovy, Rybelsus, Mounjaro, and other names mentioned are trademarks of their respective owners.

Specifications

Active substanceSemaglutide

Purity>99.92%

Formlyophilized powder

Q&A

What is the difference between the 5 mg, 20 mg, and 50 mg packages?

Semaglutide is available in three package sizes: 5 mg, 20 mg, and 50 mg. The difference is only in the quantity of the product—your choice depends on the scope of your research projects. The chemical composition, purity, and quality are identical for all packages.

Dosing

What is the purity of Semaglutide in this preparation?

The purity information for Semaglutide is provided in the Certificate of Analysis (CoA), which is supplied for each batch. The document includes independent laboratory analysis results and guarantees product quality. Request the CoA from us based on your order batch number.

Certificate of Analysis (CoA)

What does "research use only" mean and why is this product not for medical use?

"Research use only" means that Semaglutide is intended exclusively for laboratory research and in vitro/in vivo experiments for scientific purposes. This product has not been evaluated by regulatory authorities for human use, so it is prohibited to use it for diagnosis, treatment, or disease prevention.

Dosing

How long can Semaglutide be used after reconstitution in a solvent?

The shelf life after reconstitution depends on the solvent chosen and storage conditions. Reconstituted solutions should generally be used as soon as possible and stored at 2–8 °C. Specific recommendations are provided in the product documentation and Certificate of Analysis.

Certificate of Analysis (CoA)

In what form is Semaglutide supplied and how should it be stored?

Semaglutide is supplied as a lyophilized powder for laboratory research. Store the product in a cool, dry place at 2–8 °C (in a refrigerator) in a sealed, light-protected container until the package is opened.

Dosing

How do I request the Certificate of Analysis for my batch?

Each batch of Semaglutide is accompanied by a Certificate of Analysis from an independent laboratory. To obtain the CoA, provide your order batch number to our support team. The document contains detailed test results for product quality and purity.

Certificate of Analysis (CoA)

What does it mean that Semaglutide is acylated with C18 diacid?

Acylation with C18 diacid is a chemical modification that allows the Semaglutide molecule to bind to albumin in the blood. This significantly extends the circulation period of the drug in the body and is a key feature of its pharmacodynamics as a selective GLP-1 receptor agonist.

Dosing

What is the half-life of Semaglutide?

The half-life of semaglutide is approximately 1 week (about 7 days). The figure is stated in the FDA label (section 12.3) and confirmed by human pharmacokinetic studies. This long half-life comes from C18 diacid acylation and albumin binding. See the Dosing section for detail.

Dosing

Reference data — not a recommendation

The information below is provided from public sources for reference only. It is not advice or instructions for use; products are intended for laboratory research only and not for human consumption.

Adult schedule with gradual increases when needed.

Full dosing guideTitration schedule · reference

Certificates of analysis

Search all Semaglutide batches in the certificate of analysis archive

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Batch verification by COA

Find the LOT number on the vial and the outer packaging.
Open the PDF for this substance in the COA archive.
Check the substance name, the methods (HPLC, identity), and the units of the results.
Record the date of receipt and the link to the PDF in your batch log.

Semaglutide

The batch you'll receive

About

Batch verification by COA

Ozempic, Wegovy, Rybelsus — and why this is not the same thing

Documentation and storage

Comparisons and further reading

Specifications

Q&A

Dosing

Certificates of analysis

Reviews

Related products

Retatrutide

Tirzepatide

Cagrilintide

Liraglutide

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New drops & deals

New drops & deals

Batch verification by COA

Ozempic, Wegovy, Rybelsus — and why this is not the same thing

Documentation and storage

Comparisons and further reading

New drops & deals

Related products

Retatrutide

Tirzepatide

Cagrilintide

Liraglutide

Reviews

Leave a review

Leave a review