Tesamorelin

What is Tesamorelin?

Tesamorelin is a synthetic 44-amino-acid analog of growth-hormone-releasing hormone (GHRH), stabilised by an N-terminal modification. It carries the molecular formula C221H366N72O67S, a molecular weight of 5135.9 g/mol and CAS number 218949-48-5 (also coded TH9507). Kovalabs supplies it as a lyophilised research chemical for laboratory research use only.

It is a peptide, not a steroid or small molecule. The material on this page is a research chemical supplied for laboratory research use only; it is not a medicine and must not be used as one. For mechanistic background see the Tesamorelin GHRH research monograph.

Is Tesamorelin legal in the UK?

Tesamorelin is not a controlled drug under the Misuse of Drugs Act 1971 and is not scheduled. It is supplied for laboratory research use only and cannot be sold or labelled for human or veterinary consumption. It is not a licensed medicine in the UK and must not be used as one. The buyer is responsible for compliant handling and for any applicable institutional or local requirements. See our research disclaimer for full terms.

How are identity and quality assured?

Every batch is released against an independent Certificate of Analysis. Purity is assessed by HPLC at 99% or greater, and identity is confirmed against the expected mass for C221H366N72O67S (MW 5135.9 g/mol). The verified identifiers, CAS 218949-48-5 and PubChem CID 16137828, let a laboratory cross-check the reference material on receipt. Batch documents are published on our Certificates of Analysis page.

What does the research on Tesamorelin investigate?

The published literature examines Tesamorelin as a GHRH-receptor analog in pre-clinical and in-vitro model systems. Search interest often frames it around human outcomes; none of that body of work establishes a benefit, effect or outcome in humans, and this material is not a licensed medicine. The mechanistic and study-design detail is handled in the research monograph rather than on this product page.

Synthesis and supply

Tesamorelin is supplied as a white to off-white lyophilised powder, sealed in a vial and shipped from the UK. For bench work it is reconstituted with a research-grade solvent such as bacteriostatic water, which Kovalabs stocks. Store the lyophilised solid at -20C, dry and protected from light; hold reconstituted material at 2-8C.

Tesamorelin sits within the GH-axis research peptides category. Related GHRH and secretagogue research materials include Sermorelin, CJC-1295 DAC and Ipamorelin.