99%+ purity · USA shipping
GLP-1 / Incretin Class Analogs
Research-grade lyophilized peptides. Third-party tested, COA available on request, shipped within 24 hours from our USA facility.
GLP-1 / Incretin Class Analogs
Incretin receptor agonists are peptides studied for their interaction with the GLP-1, GIP, and glucagon receptor systems in metabolic research. This category collects research-grade incretin compounds including semaglutide, tirzepatide, and retatrutide analogs, each supplied at 99%+ purity with a batch-specific Certificate of Analysis. For laboratory research use only.
Working out dilutions before you order? Use the free peptide reconstitution calculator to convert any vial mass and diluent volume into concentration, draw volume and U-100 syringe graduations.
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In stock 24 h shipSale!

Retatrutide
Price range: $79.99 through $219.99Available in 10 mg / 20 mg / 30 mg / 40 mgSelect options This product has multiple variants. The options may be chosen on the product page -
In stock 24 h shipSale!

Tirzepatide
Price range: $54.99 through $259.99Available in 10 mg / 20 mg / 30 mg / 40 mg +1 moreSelect options This product has multiple variants. The options may be chosen on the product page -
In stock 24 h shipSale!

Semaglutide
Price range: $39.99 through $89.99Available in 10 mg / 20 mg / 30 mgSelect options This product has multiple variants. The options may be chosen on the product page
Frequently Asked Questions
Which compounds are covered by the incretin category?
Semaglutide, tirzepatide and retatrutide. All three are long-chain synthetic analogs studied in metabolic and receptor-pharmacology model systems, and all are supplied as lyophilized powder for laboratory research use only.
What is the difference between a single, dual and triple agonist?
The terms describe how many receptor targets a molecule engages in published receptor work. Semaglutide is characterized as a GLP-1 receptor agonist, tirzepatide as engaging both GIP and GLP-1 receptors, and retatrutide as reported at GLP-1, GIP and glucagon receptors. The distinction matters when selecting a comparator for an assay.
Why are these peptides harder to synthesize than short sequences?
Incretin analogs are long sequences that usually carry a lipid side chain, so the synthesis has more steps and more opportunities for closely related impurities. That makes analytical data more important for this class than for short peptides, and it is why full purity and identity results ship with every lot.
How is incretin analog material handled after arrival?
Vials arrive lyophilized and are held at 2 to 8 C on receipt, or frozen for extended storage. Reconstituted material is kept refrigerated, protected from light, and treated as short-dated because long peptides in solution are more prone to aggregation than dry powder.