Research Overview
Tirzepatide, known by the development code LY3298176, is a synthetic 39-amino-acid peptide studied as a dual incretin receptor agonist. It is engineered to engage two receptors — the GIP receptor and the GLP-1 receptor — making it the reference dual agonist in the single / dual / triple framework described in our GLP Research Overview.
Its structure is built on a GIP-based peptide backbone with a fatty-acid moiety that extends stability in research models. It is supplied as a lyophilized powder for laboratory research and is widely used as a comparison reference in incretin pharmacology work.
Mechanism Summary
Tirzepatide is studied as an agonist at two G-protein-coupled receptors — the GIP and GLP-1 receptors. Dual engagement produces a combined signaling profile that researchers examine through downstream readouts such as cyclic AMP (cAMP) accumulation in cell-based assays. Because tirzepatide engages two of the three incretin receptors, it is a natural comparison point against both single agonists (one receptor) and triple agonists such as retatrutide (three receptors).
Reference Data
| Compound name | Tirzepatide |
|---|---|
| Synonyms | LY3298176 |
| CAS number | 2023788-19-2 |
| Molecular formula | C225H348N48O68 |
| Molecular weight | ≈ 4813.45 g/mol |
| Peptide class | Dual incretin receptor agonist (GIP / GLP-1) |
| Residues | 39-amino-acid synthetic peptide |
| Physical form | Lyophilized powder |
| Purity | ≥ 99% identity — verified by COA on every batch |
Molecular values are provided as published reference figures for research identification. Always confirm against the batch-specific Certificate of Analysis.
Research Applications
In laboratory research, tirzepatide is commonly studied in:
- Dual receptor-binding and receptor-activation assays
- cAMP and downstream signaling readouts in cell-based models
- Comparative potency profiling against single and triple agonists
- Structure-activity relationship (SAR) research
- Peptide stability, formulation and reconstitution studies
Storage Information
Lyophilized tirzepatide is the most stable form and should be stored cold and protected from light and moisture until use. Once reconstituted with bacteriostatic water, the working solution becomes more sensitive to temperature and time — keep it refrigerated and use it within a limited window. Full handling protocols are in the Lyophilized Storage Guide, and the Reconstitution Calculator will compute concentration and draw volumes for any vial size.
Tirzepatide is sold strictly for laboratory and in-vitro research. It is not for human consumption, veterinary use, or any diagnostic or therapeutic application. Nothing on this page is medical, dosing, or therapeutic advice.