GHRP-2
Also known as: pralmorelin · KP-102
A synthetic hexapeptide ghrelin receptor agonist, used in some jurisdictions as a diagnostic agent for growth hormone secretion.
Development status: Investigational — studied in human trials
Identifiers and molecular characteristics
- CAS number
- Not verified
- Molecular formula
- Not verified
- Molecular mass
- Not verified
- Amino-acid sequence
- Not verified
- PubChem CID
- Not verified
Identifiers are published only with a source and a check date. Fields marked “not verified” have not yet been confirmed against a primary source — we show the gap rather than an unchecked figure. Always confirm against the certificate of analysis for the specific lot you hold.
Biological targets
- GHS-R1a
Mechanism of action
Agonism at the ghrelin receptor on pituitary somatotrophs, stimulating growth hormone release.
Research evidence and its limits
Published human pharmacology, principally in diagnostic testing contexts.
Safety considerations
No regulatory authority has assessed this compound as safe or effective for any human indication. The published record is predominantly laboratory and animal work, which does not establish human safety. Supplied and discussed here strictly as a laboratory research material. Not a medicine, not for human or veterinary administration, and nothing on this page should be read as a dosing, treatment or safety recommendation.
Analytical identification and quality testing
Identity by high-resolution mass spectrometry against the expected mass, purity by RP-HPLC with UV detection. For a sequence-defined peptide, enzymatic digestion followed by peptide mapping gives far stronger identity evidence than mass alone, because isomers and closely related sequences can share a mass.
Regulatory status
Approved as a diagnostic agent in at least one jurisdiction. Verify current status.
References
Related compounds
Ipamorelin
A pentapeptide ghrelin receptor agonist. Acts at GHS-R1a, a different receptor from the GHRH analogues it is frequently paired with in discussion.
GHRP-6
An early synthetic hexapeptide secretagogue acting at GHS-R1a. Historically important in the discovery of the ghrelin receptor system.
Hexarelin
A synthetic hexapeptide secretagogue, also studied for reported cardiac effects independent of growth hormone release.
Entry last reviewed 2026-10-11. Regulatory status and scientific understanding change; verify against primary sources before relying on anything here.