Description
PrymaLab · Research use only
GHRP-2 5mg
GHRP-2 (pralmorelin) as 5 mg of freeze-dried powder, the smaller of two vial fills
GHRP-2 is a six-residue synthetic peptide, also called pralmorelin, that acts at the growth hormone secretagogue receptor. This vial holds 5 mg of the freeze-dried peptide, half the 10 mg main fill, made and tested as its own lot. The literature on GHRP-2 is mostly about growth hormone release in people and its use in testing pituitary reserve.
Specifications
| Property | Value |
|---|---|
| Compound | GHRP-2 Pralmorelin; KP-102; growth hormone-releasing hexapeptide |
| CAS number | 158861-67-7 |
| Molecular formula | C45H55N9O6 |
| Theoretical mass | 818.0 Da |
| Sequence / structure | H-[D-Ala]-[D-2-Nal]-A-W-[D-Phe]-K-NH₂ (6 residues; C-terminal amide) |
| Label claim | 5 mg/vial |
| Form | Lyophilized (freeze-dried) powder or cake in a sealed glass vial with a rubber stopper and aluminium crimp cap |
| Storage, sealed | −20 °C, desiccated, dark |
| Purity specification | 99.0% or higher by RP-HPLC |
| Lot certificate | Results for the lot now shipping are in the certificate panel on this page |
| Safety data sheet | PL-SDS-061 |
Other fills
This is the 5 mg fill. The GHRP-2 10mg page is the main listing for this compound, with the full research summary and every fill side by side. Other fills: 10 mg.
What the research covers
Ghrelin, the natural ligand of the receptor GHRP-2 binds, was purified from rat stomach in 1999 and needs an octanoyl group on its third residue to be active1. GHRP-2, from the Tulane peptide series, mimics it and raises growth hormone strongly in healthy subjects but much less where growth hormone is deficient, the property behind its development as a diagnostic agent2. The GHRP-2 10 mg vial page has the full research summary, including the human pharmacokinetic and food intake studies.
The GHRP-2 vs GHRP-6 guide covers the literature in more depth.
How each lot is tested
Every lot is tested in PrymaLab’s own laboratory in Ashland, Kentucky before release: RP-HPLC for purity, LC-MS for identity, Karl Fischer titration for water, LAL for endotoxin and USP <71> for sterility. The results for the lot now shipping are in the certificate panel on this page, and the certificate number, key and QR code can be checked on the verify page. These are in-house results from PrymaLab Analytical, not an independent test, and the lab is not accredited to ISO 17025. The third-party testing guarantee on this page still applies: if any independent laboratory finds the wrong compound, or less than the stated purity or amount, the order is refunded and the cost of the test is reimbursed.
Frequently asked questions
Is the 5 mg vial the same peptide as the 10 mg?
Yes. It is the same GHRP-2 sequence, H-D-Ala-D-2-Nal-Ala-Trp-D-Phe-Lys-NH2, with a theoretical mass of 818.0 Da. The 5 mg fill is produced as a separate lot, so its lot number and certificate differ from those of the 10 mg vial.
How many micromoles are in 5 mg?
About 6.1 µmol, from the theoretical mass of 818.0 Da. The real figure is a little lower because the freeze-dried powder also holds residual water, which the certificate reports as a percentage.
When does the smaller fill make sense?
When the planned work needs less than 10 mg within the time your laboratory allows a reconstituted solution to stand at 2 to 8 °C. Sealed, both fills are stored the same way: −20 °C, dry and dark.
References
- Kojima M, Hosoda H, Date Y, et al. Ghrelin is a growth-hormone-releasing acylated peptide from stomach. Nature. 1999;402(6762):656-60. DOI · PubMed
- . Pralmorelin: GHRP 2, GPA 748, growth hormone-releasing peptide 2, KP-102 D, KP-102 LN, KP-102D, KP-102LN. Drugs R D. 2004;5(4):236-9. DOI · PubMed
Research use only
For laboratory research use only. GHRP-2 5mg is not a drug, food, cosmetic or dietary supplement, is not approved by the FDA or any comparable authority for human or veterinary use, and must not be given to people or animals. It is sold to qualified researchers and institutions, and the buyer is responsible for lawful handling and disposal.
Other formats of GHRP-2
GHRP-2 is also stocked as GHRP-2 Nasal Spray and GHRP-2 10mg preloaded 3ml pen. Each listing states its own quantity and concentration, and the pen and vial comparison explains what changes between formats.
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