Sermorelin
Sermorelin is a synthetic 29-residue peptide amide corresponding to residues 1–29 of human growth-hormone-releasing hormone (GHRH), also written GRF(1–29)NH2 — the N-terminal fragment of the 44-residue parent sequence, capped with a C-terminal primary amide.

Identity & structure
Primary sequence · 29 residues · C-terminal amide · N-terminal 1-29 fragment of human growth-hormone-releasing hormone (GHRH): twenty-nine L-amino acids in the native GHRH sequence, C-terminally amidated (GRF(1-29)NH2). Position 15 is Gly and position 27 the lone Met; the parent's free acid is replaced here by a primary amide..
| Identity | |
|---|---|
| CAS | 86168-78-7 |
| PubChem CID | 16132413 |
| FDA UNII | 89243S03TE |
| Also known as | GRF(1-29), GHRH(1-29), GHRH(1-29)NH2, GRF(1-29)NH2, hGHRH(1-29)NH2, Growth hormone-releasing factor (1-29), Sermorelin acetate, Sermorelin peptide |
| Research class | Secretagogue & Regulatory |
| Structure | |
| Molecular formula | C149H246N44O42S |
| InChIKey | WGWPRVFKDLAUQJ-MITYVQBRSA-N |
| Sequence | Tyr-Ala-Asp-Ala-Ile-Phe-Thr-Asn-Ser-Tyr-Arg-Lys-Val-Leu-Gly-Gln-Leu-Ser-Ala-Arg-Lys-Leu-Leu-Gln-Asp-Ile-Met-Ser-Arg-NH2 |
| Length | 29 residues |
| Analytical | |
| Average molecular weight | 3357.93 g/mol |
| Monoisotopic mass | 3355.8187 Da (computed) |
Sermorelin is the N-terminal 1–29 fragment of human growth-hormone-releasing hormone (GHRH), a single unbranched chain of twenty-nine L-amino acids (single-letter YADAIFTNSYRKVLGQLSARKLLQDIMSR) finished with a C-terminal primary amide in place of the free acid — the feature encoded in the (1–29)NH2 designation. Position 15 is glycine and position 27 the lone methionine, which contributes the single sulfur atom, and the sequence computes exactly to the molecular formula C149H246N44O42S (average mass 3357.93 g/mol; monoisotopic 3355.8187 Da). The identity is reconciled against PubChem CID 16132413: molecular formula, isomeric SMILES and the stereo-defined InChIKey WGWPRVFKDLAUQJ-MITYVQBRSA-N all match a peptide assembled independently from the sequence (thirty-one stereocentres, none unassigned). The CAS number 86168-78-7 denotes the free peptide; the historical acetate salt carries a separate registry number.
Reference context
Sermorelin is a synthetic 29-residue peptide amide corresponding to residues 1–29 of human growth-hormone-releasing hormone (GHRH), also written GRF(1–29)NH2 — the N-terminal fragment of the 44-residue parent sequence, capped with a C-terminal primary amide. It is listed here strictly as an analytical reference entity — it is not sold, stocked, or certified by Lineará, and has no price or certificate of analysis. The data on this page is characterization only: molecular formula C149H246N44O42S and the values computed from it. No biological activity, mechanism, or use is described or implied.
Listed solely as a characterized analytical reference — no representation is made as to any biological effect. For Research Use Only — not for human or veterinary use.
How Sermorelin is characterized
Identity rests on the molecular formula and mass. Electrospray mass spectrometry (ESI-MS) measures the mass-to-charge ratio of the intact molecule; the average and monoisotopic masses are computed from the verified formula and cross-check the composition. The residue sequence and the modifications noted above define the structure.
Frequently asked questions
What is Sermorelin?
What is the amino-acid sequence of Sermorelin?
What is the molecular formula of Sermorelin?
What are the key chemical identifiers for Sermorelin?
Is Sermorelin a peptide?
How is Sermorelin stored and reconstituted?
Does Lineará sell Sermorelin?
Is Sermorelin approved for human use?
Data, tools & related references
References
- PubChem — compound identity, structure & computed properties (CID 16132413). PubChem →
- CAS Registry Number 86168-78-7.
- FDA Global Substance Registration System — UNII 89243S03TE.
Research professionals only
Reference data
This monograph is characterization reference data. Lineará does not sell, stock, or certify Sermorelin.