Sermorelin
$54.99
Sermorelin: 29-amino-acid GHRH fragment, 3,357.93 Da, lyophilized powder. Lot 2026-08-05 reads 99.65% HPLC purity, endotoxin negative, tested by MZ Biolabs. Read the COA. Free shipping over $150 and same-day dispatch from the USA. Research use only, 21+.
| Title | Range | Discount |
|---|---|---|
| Save 3% | 3 - 4 | 3% |
| Save 5% | 5 - 9 | 5% |
| Best Value - Save 10% | 10 + | 10% |
Description
What is sermorelin?
Sermorelin is a 29-amino-acid fragment of human growth hormone releasing hormone (GHRH 1-29) with a molecular weight of about 3,358 Da. Peptryn’s 10mg vial is a laboratory research material.
Sermorelin specifications
| Compound | Sermorelin (GHRH 1-29) |
|---|---|
| Size | 10mg |
| Form | Lyophilized powder |
| Molecular weight | 3,357.93 Da |
| Formula | C149H246N44O42S |
| CAS number | 86168-78-7 |
| Solubility | Water-soluble |
Lot testing and COA
The latest published report is for lot 2026-08-05: 99.65% purity by HPLC-UV-MS and a negative endotoxin result, tested by MZ Biolabs. The certificate links to the laboratory’s own report, so you can check it without relying on us.
Sermorelin 10mg COA · COA Library
Ordering
Orders placed on peptryn.com ship from the USA with same-day dispatch, and shipping is free on orders over $150. For a question about a lot or a size, email [email protected].
Storage
Store lyophilized powder at -20°C, protected from light and repeated freeze-thaw cycles.
Frequently asked questions
What is sermorelin?
Sermorelin is a 29-amino-acid fragment of human growth hormone releasing hormone (GHRH 1-29), about 3,358 Da. Peptryn supplies it as a 10mg lyophilized laboratory material.
What purity is Peptryn’s sermorelin?
Peptryn’s sermorelin is verified at 99.65% purity by HPLC-UV-MS, tested by MZ Biolabs (lot 2026-08-05). Read the COA. HPLC purity is area percent, the share of the main peak among all detected peaks; see our guide to peptide purity for what that means.
How is sermorelin stored?
Store lyophilized powder at -20°C, protected from light and repeated freeze-thaw cycles.
What is sermorelin’s CAS number?
Sermorelin’s CAS number is 86168-78-7. Molecular weight: 3,357.93 Da.
Is sermorelin for human use?
No. Peptryn sells it for laboratory research only, and it is not approved for human or veterinary use. We do not give dosing or administration guidance.
Is Sermorelin the same as Geref?
Sermorelin was previously marketed as the FDA-approved drug Geref, which is no longer sold. Peptryn’s vial is a laboratory research material and is not an approved drug. See our popular peptides guide for FDA status details.
Related: Sermorelin peptide guide · What is a COA? · Peptide testing · Popular peptides
For laboratory research use only. Not for human or veterinary use, and not a drug, food, dietary supplement or cosmetic. You must be 21 or older to buy.
Additional information
| Size | 10mg |
|---|---|
| Molecular Weight | 3,357.93 Da |
| Molecular Formula | C149H246N44O42S |
| CAS Number | 86168-78-7 |
| Form | Lyophilized powder |
| Purity | ≥99% (HPLC and mass spectrometry verified) |
| Solubility | Water-soluble |
| Storage | -20°C lyophilized; protect from light and freeze-thaw cycles |
Certificate of Analysis
Every batch of Peptryn peptides is independently tested by a US-based laboratory. Purity, identity, and molecular weight are verified by HPLC and mass spectrometry before any vial ships. View your batch's certificate of analysis in our lab results library.
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