Key highlights
Product specifications
| Compound Class | Synthetic Polypeptide · Stabilized GHRH(1–44) analog · GHRH Receptor Agonist |
|---|---|
| Form | Lyophilized powder in sterile glass vial |
| Quantity | 5 mg per vial |
| CAS Number | 901758-09-6 (acetate salt) |
| Chemical Formula | C223H370N72O69S (acetate salt; free base C221H366N72O67S) |
| Molar Mass | ≈5195.9 g/mol (acetate salt) · ≈5135.9 g/mol (free base) |
| Structure | Stabilized analog of the 44-residue form of GHRH — GHRH(1–44) — bearing a trans-3-hexenoyl group at the N-terminus and a C-terminal amide |
| Synonyms | Tesamorelin, Tesamorelin acetate, TH9507, (trans-3-hexenoyl)-hGRF(1–44)-NH2 |
| Verified Purity | Batch-tested to 99.95% (HPLC) |
For laboratory research use only. Not for human or animal consumption.
View certificates of analysisIndependently verified
This peptide is analyzed by an accredited US third-party laboratory before it ships.
Identity and purity confirmed by MZ Biolabs (Tucson, AZ), a US DEA-licensed analytical facility, via HPLC purity analysis and mass-spectrometry identity confirmation under GLP standards.
Our third-party certificates of analysis are published on our website — no login required.
Tesamorelin99.95% pure
Storage & handling
Peptides are photo- and temperature-sensitive; handle per standard laboratory practice.
- Lyophilized storage: Keep the sealed vial cool, dry, and away from direct light. For long-term storage, freezing (e.g. −20 °C) is standard practice for lyophilized peptides.
- After reconstitution: Refrigerate (approximately 2–8 °C) and follow your institution’s SOPs for aliquoting, handling, and disposal. Avoid repeated freeze–thaw cycles.
- Diluent not included: Reconstitution supplies are not provided. A mild acidic diluent (e.g. 0.6% acetic acid) is commonly used for this peptide; bacteriostatic water and compatible buffers are also referenced for research use.
- UV-resistant glass vial to help protect photo-labile peptides during storage.
- Tamper-evident seal to support chain-of-custody and inventory controls.
Why source Tesamorelin from Sports Technology Labs
Quality control across the research-peptide industry is inconsistent, and many suppliers do not publish third-party testing for their products. Independent verification of identity and purity is essential for reproducible research.
Verified by MZ Biolabs (Tucson, AZ), an accredited US laboratory, via HPLC and mass spectrometry, with batch-linked COAs.
Freeze-dried into sterile, UV-resistant glass vials and packaged in the USA.
Supports chain-of-custody, label transparency, and batch-linked traceability.
Transparent business, standard payment methods, no misrepresentation.
What is Tesamorelin?
Tesamorelin is a synthetic analog of growth hormone-releasing hormone (GHRH). Structurally, it is a stabilized analog of the 44-amino-acid form of GHRH — GHRH(1–44) — modified at the N-terminus with a trans-3-hexenoyl group and amidated at the C-terminus, modifications that increase its stability relative to native GHRH.
Mechanistically, it acts as an agonist at the GHRH receptor. Like other GHRH analogs, and unlike ghrelin-mimetic secretagogues, it does not act through the GHS-R1a (ghrelin) receptor. It is used as a research chemical to investigate GHRH-receptor signaling in experimental models.
Tesamorelin is supplied here strictly as a research chemical for laboratory research. Sports Technology Labs makes no claims regarding its effects, and nothing in this listing should be interpreted as describing outcomes in humans or animals.
Important regulatory information
Tesamorelin is the active ingredient in an FDA-approved prescription drug (marketed as Egrifta). However, this material is supplied as a research chemical — not as an approved drug product — and is not for human or animal use. It is not a dietary supplement or sports supplement.
Growth hormone-releasing hormone (GHRH) and its analogues, including tesamorelin, are prohibited by the World Anti-Doping Agency at all times under S2 (Peptide Hormones, Growth Factors, Related Substances and Mimetics) (ref. 3).
In the United States, tesamorelin is supplied for laboratory research use. Other jurisdictions may regulate it differently.
Sports Technology Labs are chemical suppliers, not medical providers. We do not condone or encourage consumer use of research compounds.
Scientific references
- Granata R, Leone S, Zhang X, Gesmundo I, Steenblock C, Cai R, et al. Growth hormone-releasing hormone and its analogues in health and disease. Nat Rev Endocrinol. 2024;21:180–195.
- National Center for Biotechnology Information. PubChem Compound Summary for Tesamorelin (CAS 901758-09-6): molecular formula and molecular weight. PubChem, National Library of Medicine.
- WADA Prohibited List (2025), Section S2: Peptide Hormones, Growth Factors, Related Substances and Mimetics (Growth Hormone-Releasing Hormone and its analogues). WADA.org.
Research use only. All products on this website are intended exclusively for laboratory research and development. They are not for human or animal consumption. These statements have not been evaluated by the U.S. Food and Drug Administration, and these products are not intended to diagnose, treat, cure, or prevent any disease.
