Compound reference
Tesamorelin: research overview, reconstitution & sourcing
Tesamorelin (trans-3-hexenoyl-GRF(1-44)-NH2) is a stabilized growth hormone-releasing hormone analog studied for its action at the GHRH receptor. This page consolidates the molecular profile, reconstitution mathematics, storage handling and purity documentation behind every PX1 Research lot.
Molecular & product profile
| Compound class | Growth hormone-releasing hormone (GHRH) analog |
|---|---|
| Sequence | Trans-3-hexenoyl-GRF(1-44)-NH2 — 44 amino acids |
| Molecular formula | C221H366N72O67S |
| Molar mass | ≈ 5,135.9 g/mol |
| CAS number | 218949-48-5 |
| Presentation | Lyophilized powder, 10mg per vial |
| Purity specification | ≥ 99% by HPLC, confirmed by LC-MS |
| Storage (lyophilized) | -20 °C long term; 2–8 °C short term |
Reconstitution reference
Concentration is simply peptide mass divided by diluent volume. Add bacteriostatic water slowly against the vial wall, swirl until the cake fully dissolves, and confirm the solution is clear and particulate-free before use.
2.0 mL bacteriostatic water
5 mg/mL (5,000 mcg/mL)
10mg Tesamorelin vial
10 units (0.1 mL) = 500 mcg
5.0 mL bacteriostatic water
2 mg/mL (2,000 mcg/mL)
10mg Tesamorelin vial
10 units (0.1 mL) = 200 mcg
10.0 mL bacteriostatic water
1 mg/mL (1,000 mcg/mL)
10mg Tesamorelin vial
10 units (0.1 mL) = 100 mcg
Storage & handling
- Lyophilized: store at -20 °C for long-term holding; 2–8 °C is acceptable for short-term working inventory. Keep sealed and protected from light.
- Reconstituted: refrigerate at 2–8 °C. Bacteriostatic water (0.9% benzyl alcohol) is referenced at up to ~28–30 days; sterile water at 24–48 hours.
- Avoid: vigorous shaking, repeated freeze/thaw cycling, and direct diluent impact on the lyophilized cake — all accelerate peptide degradation.
- Verification: a clear, colorless solution is expected. Cloudiness or visible particulate indicates contamination or degradation.
Sourcing & documentation
PX1 Research is a primary manufacturer, not a reseller. Tesamorelin is synthesized, purified and lyophilized in our US cGMP-compliant facility, then tested by an ISO/IEC 17025 accredited third-party laboratory. Each lot ships with a batch-matched certificate of analysis covering HPLC purity, LC-MS identity, endotoxin, and sterility screening — published publicly rather than supplied on request.
Frequently asked questions
Related pages
Tesamorelin 10mg vial
Lyophilized, ≥99% HPLC, batch COA
Tesamorelin + Ipamorelin blend
Pre-blended dual-pathway research vial
Tesamorelin category hub
All Tesamorelin formats and pricing
CJC-1295 + Ipamorelin
Comparative GHRH / GHS research pairing
Reconstitution calculator
Solve any vial size and target dose
Certificates of analysis
Search published COAs by batch
Research use only. Products described on this page are supplied strictly for in-vitro laboratory research and are not for human or veterinary use, not for diagnostic procedures, and have not been evaluated by the U.S. Food and Drug Administration. Nothing here is medical advice.