Semaglutide’s 31-amino acid sequence is modified from native GLP-1 with targeted structural engineering to overcome rapid DPP-4 degradation and extend systemic circulation:
- Histidine substitution at position 7 preserves critical GLP-1 receptor N-terminal binding affinity, mandatory for full agonist activity.
- Aib (aminoisobutyric acid) replacement at position 2 eliminates DPP-4 protease cleavage, the primary breakdown pathway of endogenous GLP-1.
- C18 fatty diacid side chain conjugated to lysine via gamma-glutamate linker enables reversible non-covalent binding to serum albumin, drastically extending plasma half-life to approximately 7 days.
- C-terminal amidation prevents carboxypeptidase-mediated terminal degradation, stabilizing the peptide in aqueous reconstitution buffers and biological fluids.
| Property | Value |
|---|---|
| Name and synonyms | Semaglutide, Ozempic research peptide, Wegovy raw peptide, GLP-1 long-acting analog |
| PubChem CID | 154433038 |
| CAS number | 910463-68-2 |
| Molecular formula | C187H291N45O59 |
| Molecular weight | 4113.58 g/mol |
| Peptide length | 31 amino acids |
| Compound class | Synthetic selective GLP-1 receptor agonist |
| Primary target | GLP-1R (human) |
| Receptor potency (human EC50) | GLP-1R 0.05 nM |
| Half-life | Approximately 7 days in mammalian plasma |
| Physical form | White crystalline lyophilised powder |
| Solubility | Sterile bacteriostatic water, DMSO, PBS pH 7.0–7.4 |
| Original developer | Novo Nordisk A/S |
| Purity standard | ≥99% HPLC, MS verified per batch COA |
| Vial stock sizes | SM5, SM10, SM20 |
Semaglutide’s preclinical and clinical trial datasets form the foundational literature for modern GLP-1 peptide research, supported by the landmark SUSTAIN (glycemic control) and STEP (weight management) global Phase 3 trial series published across Diabetes Care, NEJM and Lancet Diabetes & Endocrinology journals.
This 68-week randomized, placebo-controlled double-blind trial evaluated once-weekly semaglutide in adults with BMI ≥30 kg/m² without type 2 diabetes. At maximum maintenance dose, mean body weight reduction reached 16.9% from baseline, establishing the peptide’s robust single-target satiety and lipolytic activity for comparative metabolic laboratory research.
The SUSTAIN trial series documented semaglutide’s dose-dependent HbA1c reduction, fasting glucose lowering and cardiovascular biomarker improvements in type 2 diabetic cohorts, generating standardized reference data for diabetes mechanism in-vitro and in-vivo research models.
Zypep Peptides supplies factory-direct wholesale semaglutide lyophilized powder for university labs, biotech CROs and global peptide distributors. Contact our online inquiry support via the website chat box to request bulk volume discounts, batch test COA and worldwide door-to-door shipping quotations. All products labeled FOR LABORATORY RESEARCH USE ONLY, not formulated or authorized for human injection or oral administration.






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