CJC-1295 vs Tesamorelin
A side-by-side research comparison — classification, molecular weight, mechanism, and how each is verified. For laboratory research use only.
01At a Glance
| CJC-1295 | Tesamorelin | |
|---|---|---|
| Classification | Endocrine | Endocrine |
| Molecular weight | 3,367.8 g/mol | 5,135.9 g/mol |
| Also known as | Modified GRF 1-29 (no DAC) | TH9507 |
| Purity spec | ≥99% HPLC | ≥99% HPLC |
| Verification | MZ Biolabs · 5-panel | MZ Biolabs · 5-panel |
| Use | Research Use Only | Research Use Only |
02How They Differ
CJC-1295
A growth-hormone-releasing hormone analog studied for pulsatile GH secretion.
CJC-1295 (without DAC) is a modified analog of growth-hormone-releasing hormone (GHRH) fragment 1-29. It acts as a GHRH-receptor agonist on pituitary somatotrophs, studied for its capacity to stimulate growth-hormone release while preserving the natural pulsatile pattern.
Tesamorelin
A stabilized GHRH(1-44) analog studied for growth-hormone-axis and lipid metabolism.
Tesamorelin is a stabilized analog of the full-length growth-hormone-releasing hormone GHRH(1-44). As a GHRH-receptor agonist it is studied for stimulation of endogenous growth-hormone secretion and downstream IGF-1 signaling.
Research framing only · No human-use claims
03Selecting for a Research Model
Because CJC-1295 and Tesamorelin are both endocrine research compounds, they are frequently evaluated against one another. Selection depends entirely on the research question, model system, and endpoints being measured. Both compounds are supplied strictly for in-vitro and laboratory research and are not for human or veterinary use.
Whichever you select, every Ethos Bio lot is verified the same way — a five-point independent panel with a batch-specific Certificate of Analysis. See how we test →
04FAQ
What is the difference between CJC-1295 and Tesamorelin?
CJC-1295 is a endocrine research compound — A growth-hormone-releasing hormone analog studied for pulsatile GH secretion. Tesamorelin is also studied within the endocrine area — A stabilized GHRH(1-44) analog studied for growth-hormone-axis and lipid metabolism. They differ in molecular weight (CJC-1295: 3,367.8 g/mol; Tesamorelin: 5,135.9 g/mol) and primary mechanism. Both are supplied for laboratory research use only.
What are the molecular weights of CJC-1295 and Tesamorelin?
CJC-1295 has a molecular weight of 3,367.8 g/mol. Tesamorelin has a molecular weight of 5,135.9 g/mol.
Are CJC-1295 and Tesamorelin in the same research class?
Yes — both CJC-1295 and Tesamorelin are categorized as Endocrine research compounds, which is why they are often compared.
How are CJC-1295 and Tesamorelin tested?
Both are analyzed by an independent third-party laboratory (MZ Biolabs, Arizona) on a five-point panel — HPLC purity, mass-spectrometry identity, endotoxin, heavy metals, and sterility — with a batch-specific Certificate of Analysis provided per lot.