Tesamorelin
Tesamorelin is a 44-residue synthetic analog of growth-hormone-releasing hormone, with the molecular formula C221H366N72O67S and a molecular weight of 5135.86 g/mol.

Identity & structure
Verified identifiers, sequence, and analytical properties — every value machine-readable and independently sourceable against PubChem.
Primary sequence · 44 residues · N-terminal trans-3-hexenoyl · C-terminal amide.
| Identity | |
|---|---|
| CAS | 218949-48-5 |
| PubChem CID | 16137828 |
| FDA UNII | MQG94M5EEO |
| Also known as | Tesamorelin peptide, TH9507, TH-9507 |
| Research class | Secretagogue & Regulatory |
| Structure | |
| Molecular formula | C221H366N72O67S |
| InChIKey | QBEPNUQJQWDYKU-BMGKTWPMSA-N |
| Sequence | 44-residue GHRH analog |
| Length | 44 residues |
| Analytical | |
| Average molecular weight | 5135.86 g/mol |
| Monoisotopic mass | 5132.7166 Da |
| Form | Lyophilized powder |
| Solubility | Water-soluble |
| Storage | 2–8 °C, desiccated |
Where Tesamorelin sits in its class
Molecular weight (g/mol) across the 21 characterized compounds in Secretagogue & Regulatory. Compare all compounds →
Research context
Tesamorelin is a 44-residue synthetic analog of growth-hormone-releasing hormone, with the molecular formula C221H366N72O67S and a molecular weight of 5135.86 g/mol. It is supplied as a characterized research material and referenced in secretagogue research, with identity confirmed by mass spectrometry and purity measured by reversed-phase HPLC.
Supplied solely as a characterized research material. No representation is made as to any biological effect. For Research Use Only — not for human or veterinary use.
How Tesamorelin is identified
Identity and purity are measured, not asserted. Electrospray mass spectrometry (ESI-MS) determines the mass-to-charge ratio of the intact molecule — an observed value matching the expected series above confirms the molecular formula. Reversed-phase HPLC separates the sample over time, and purity is read as arithmetic: the target peak’s area as a share of total peak area.
Handling & stability
Physical form, storage, and solubility as supplied. Handling guidance only — no use protocols.
Related compounds
Other compounds in this research class.
Frequently asked questions
What is Tesamorelin?
What is the molecular formula of Tesamorelin?
What is the CAS number of Tesamorelin?
How is the identity of Tesamorelin confirmed?
How should Tesamorelin be stored?
Is Tesamorelin a peptide?
Is Tesamorelin approved for human use?
Data, tools & certificates
Research literature
Research literature — for reference only
Curated peer-reviewed references indexing the identity, characterization, and analytical-method literature for Tesamorelin, from the U.S. National Library of Medicine (PubMed). Listed as neutral citations only — no findings, conclusions, or use are stated or implied.
References
- PubChem — compound identity, structure & computed properties (CID 16137828). PubChem →
- CAS Registry Number 218949-48-5.
- FDA Global Substance Registration System — UNII MQG94M5EEO.
Research professionals only
Tesamorelin — from the record to the bench
The monograph and every lot certificate stay public. Pricing and ordering open for verified research professionals.