What purity is Bastion Peptides Semaglutide?

≥99% HPLC purity, verified by Janoshik Analytical. Semaglutide's complex structure — 26 amino acids plus a fatty acid chain — makes purity verification especially critical; each batch undergoes both HPLC and LC-MS analysis.

How do I reconstitute Semaglutide?

Add 2.5 mL of bacteriostatic water to the 5 mg vial for a concentration of 2,000 µg/mL. Swirl gently until fully dissolved — do not shake.

What form does Semaglutide come in?

Lyophilized powder in a sealed 5 mg vial. Supplied as a research compound only, not formulated for clinical use.

How should Semaglutide be stored?

Store lyophilized at −20°C until use. Once reconstituted, store at 2–8°C and use within 28 days.

Metabolic Research

Semaglutide | 5mg

Name: Semaglutide | 5mg | HPLC Verified ≥99% Purity | Bastion Peptides
SKU: SEM-5
Availability: InStock
Rating: 0 (1 reviews)

(1 customer review)

Price range: $65.00 through $520.00

Research-grade Semaglutide 5mg. GLP-1 receptor agonist. For in vitro research use only.

Pack Size

Clear

HPLC Verified ≥99% Purity

COA Included with Every Order

Ships from US — Discreet Packaging

I confirm this product is for in-vitro research purposes only and not for human consumption or therapeutic use.

SKU: SEM-5 Category: Metabolic Research

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Volume Pricing

1 Vial $65.00

5 Vials $290.00($58.00/vial) Save 11%

10 Vials Best Value $520.00($52.00/vial) Save 20%

Wholesale accounts save 20–50% on all orders.

For Research Use Only — Not for human or veterinary consumption. Intended solely for in vitro laboratory research.

Third-Party Tested · Janoshik Independent Laboratories · >99% Purity

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Cold-Chain Shipping Included — Insulated packaging + ice packs on every order. Store at −20°C upon arrival.

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Overview

Semaglutide is a synthetic GLP-1 receptor agonist (GLP-1 RA) and fatty acid-modified analogue of human glucagon-like peptide-1 (GLP-1) with approximately 94% sequence homology to native GLP-1(7-37). Its C18 fatty diacid modification enables reversible albumin binding, extending the half-life to approximately 7 days. Semaglutide has become one of the most extensively studied metabolic peptides globally, with published research spanning pancreatic beta-cell function, cardiovascular protection, neurological effects, and body weight regulation.

Structure	GLP-1(7-37) analogue: Aib8 substitution + C18 fatty diacid at Lys34 via linker
Molecular Formula	C₁₈₇H₂₉₁N₄₅O₅₉
Molecular Weight	4113.58 g/mol
CAS Number	910463-68-2
Purity	≥95% (HPLC verified)
Format	Lyophilized powder
Quantity	5mg per vial
Storage	-20°C, protect from light

Key Research Applications

GLP-1 receptor activation and cAMP/PKA signaling studies
Pancreatic β-cell insulin secretion and proliferation models
Appetite suppression and hypothalamic satiety signaling research
Cardiovascular and cardiometabolic protection studies
Neuroinflammation and neuroprotection models
Fatty liver disease (NAFLD/NASH) preclinical research
Obesity and type 2 diabetes animal models

Reconstitution: Add 1 mL of sterile bacteriostatic water. Gently swirl — do not shake. Store reconstituted peptide at 4°C and use within 28 days.

Research Use Only. This product is intended strictly for in vitro laboratory research. Not for human or veterinary use. Not evaluated by the FDA.

Researcher Resources

For laboratory research purposes only. Not for human consumption. These statements have not been evaluated by the U.S. Food and Drug Administration.

Pack Size	1 Vial, 5 Vials, 10 Vials

1 review for Semaglutide | 5mg

Rated 5 out of 5
R. Calloway – April 29, 2026
Semaglutide 5mg — clear solution post-reconstitution, no visible aggregation. Clean COA with HPLC trace provided. Would recommend for GLP-1 research setups.

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Reconstitution Calculator

Calculate exactly how much bacteriostatic water to add for your target concentration.

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Shelf Life (reconstituted) 28 days @ 4°C

For research purposes only. Always verify concentrations independently.

Frequently Bought Together

Bacteriostatic Water 10ml $8.00 Required for peptide reconstitution

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Frequently Asked Questions

What purity level is this peptide?+

All Bastion Peptides products are >99% purity (HPLC verified). IGF-1 LR3 is >98%. Certificate of Analysis available on the Resources page for every batch.

How do I reconstitute this peptide?+

Add bacteriostatic water slowly along the vial wall — do not shake. Gently swirl until dissolved. Standard dilution: 1ml bac water per 5mg peptide. Store reconstituted peptide at 4°C and use within 28 days.

What are the storage requirements?+

Store lyophilized (freeze-dried) peptides at −20°C. Once reconstituted, store at 4°C and use within 28 days. Avoid repeated freeze-thaw cycles and light exposure.

Is this product for human use?+

No. All products are strictly for in vitro laboratory research only. Not intended for human or veterinary use, consumption, or any therapeutic application.

How is cold-chain shipping handled?+

All orders ship with insulated packaging and ice packs included. US standard shipping is 3–5 business days. Expedited options available at checkout.

Do you provide a Certificate of Analysis?+

Yes. COA documents for every batch are available on the Resources page. Contact support to request a specific batch COA.

Certificate of Analysis

COA Available on Request

Janoshik Independent Lab

Lot-Specific Testing

All Bastion Peptides products are submitted to Janoshik Independent Laboratories for third-party purity, identity, and potency verification. Certificates of Analysis are available for every product lot.

Request COA by Email Janoshik Lab Website

Semaglutide | 5mg