Description
Sermorelin is a synthetic peptide consisting of the first 29 amino acids of human growth hormone-releasing hormone (GHRH), which in its full form contains 44 amino acids. Its molecular formula is C149H246N44O42S, with a molecular weight of 3,358.04 g/mol (CAS 86168-78-7). It was first synthesized in the 1980s and is sometimes referred to as GRF(1-29)NH2, indicating that it corresponds to the first 29 residues of growth hormone-releasing factor with an amidated C-terminus.
The 29-amino-acid fragment represents the shortest sequence of GHRH that retains the complete receptor-binding sequence of GHRH. The single sulfur atom in its formula comes from a methionine residue at position 27. In its research-grade form, Sermorelin appears as a white to off-white lyophilized powder that dissolves readily in water and remains stable under refrigerated storage.
This product is strictly for research purposes only. Not approved for human or animal use.
PubChem Reference: View compound profile on NIH PubChem
Key Characteristics
MOLECULAR PROFILE
Formula: C149H246N44O42S
Weight: 3,358.04 g/mol
CAS: 86168-78-7
Structure: First 29 amino acids of GHRH
PHYSICAL PROPERTIES
Form: White to off-white lyophilized powder
Solubility: Readily dissolves in water
Stability: Excellent when properly stored
Storage: Keep refrigerated 36‑46 °F (2‑8 °C)





Courtney Lee –
Ordered the Sermorelin kit for a long-term study. Consistency across all 10 vials is impressive. Customer support answered my questions about storage right away. Will definitely reorder
Dr. Henry Wu –
Trustworthy vendor with genuine products. Sermorelin performed flawlessly in our in vivo models. The CAS number (86168-78-7) matched, and the 100% purity was confirmed. Fast shipping to Asia as well
Marcus Webb –
Solid product from a solid vendor. Sermorelin arrived with a clear label, intact vacuum seal, and proper documentation. Free shipping over $200 made this even more affordable for our lab. Highly satisfied
Lauren Mitchell –
Third time ordering Sermorelin from PeptidesVital. Every batch has been identical in quality no clumping, no degradation. The 10-vial kit is a lifesaver for our ongoing experiments. Highly recommend
Brian Torres –
Great value for a 10-vial kit. Sermorelin reconstitutes cleanly no cloudiness or residue. PeptidesVital is becoming my go-to for research peptides. The CAS number matched exactly, and delivery took only 5 days.
Elena Vasquez –
Finally found a reliable Sermorelin source. The kit format is convenient, and each vial holds up well after reconstitution. Our research data has been reproducible and clean. Five stars
Samuel Okafor –
International shipping was smooth the kit arrived in perfect condition. Sermorelin purity is top-tier, and the price per vial for a 10-pack is very reasonable. Excellent experience overall
Dr. Amanda Fields –
Sermorelin arrived as a 10-vial kit, and every vial was perfectly lyophilized. The 100% purity claim held up under our QC tests. Excellent for our growth hormone research studies. Shipping was fast and well-packaged