Ipamorelin Ipamorelin PRODUCT IMAGE
HPLC VERIFIED CoA SUPPLIED ≥99% PURITY
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- Growth

Ipamorelin Selective Growth Hormone Secretagogue

For in vitro research use only. Ipamorelin is not for human or veterinary consumption, diagnosis, treatment, or prevention of any condition.

Ipamorelin is a synthetic five-amino-acid peptide (a pentapeptide) that selectively switches on the ghrelin receptor - one of the body's signals for releasing growth hormone. In research it is valued as one of the most selective growth hormone secretagogues: it prompts GH release while having little effect on other hormones such as cortisol or prolactin, giving researchers a clean tool for studying this pathway.

CAS Number
170851-70-4
Molecular Formula
C₃₈H₄₉N₉O₅
HPLC Purity
≥99% (batch-verified)
Form
Lyophilised powder
Storage
2–8°C, desiccated, protected from light
Classification
Research reagent - in vitro use only
≥99%
HPLC purity
3rd-Party Tested
Independent lab
CoA Every Order
Batch-specific
Tracked 24
Royal Mail UK
Pay by Bank
No card stored

Research overview

Ipamorelin is a synthetic pentapeptide (Aib-His-D-2-Nal-D-Phe-Lys-NH₂) classified as a growth hormone secretagogue (GHS) and a growth hormone releasing peptide (GHRP). It acts as a selective agonist at the ghrelin receptor (growth hormone secretagogue receptor type 1a, GHS-R1a), the same receptor targeted by the endogenous hormone ghrelin, to stimulate the release of growth hormone (GH) from the anterior pituitary in preclinical models.

What distinguishes Ipamorelin in the research literature is its selectivity. Earlier GHRP compounds such as GHRP-2 and GHRP-6 stimulate GH release but also elevate other pituitary hormones — notably cortisol, prolactin and ACTH. In animal-model studies, Ipamorelin produces GH release with minimal effect on these other axes, making it a useful tool for isolating growth-hormone-secretagogue signalling without confounding hormonal effects. This receptor selectivity is the principal reason it is so widely used as a research reagent.

In growth-hormone-secretagogue research, Ipamorelin is frequently studied alongside GHRH-receptor agonists such as CJC-1295: the ghrelin-receptor and GHRH-receptor pathways act on distinct mechanisms in pituitary somatotroph cells and can amplify GH release synergistically, making the combination a common subject of study. Velox Peptides supplies Ipamorelin at ≥99% HPLC-verified purity as a lyophilised research reagent with batch certificate of analysis. Not for human or veterinary consumption.

Summary paraphrased from the peer-reviewed preclinical literature. For in vitro research use only. For source citations, email support@veloxpeps.com.

Compound specifications

Common nameIpamorelin
Full nameSelective Growth Hormone Secretagogue (Pentapeptide)
CAS number170851-70-4
Molecular formulaC₃₈H₄₉N₉O₅
Molecular weight711.85 g/mol
SequenceAib-His-D-2-Nal-D-Phe-Lys-NH₂
HPLC purity≥99% (batch-verified)
AppearanceWhite to off-white lyophilised powder
SolubilityBacteriostatic water, sterile saline
Storage (lyophilised)2–8°C, protected from light
Storage (reconstituted)2–8°C, up to 28 days
Supplied as10mg

Batch testing and certificate of analysis

Every batch of Ipamorelin is third-party HPLC-tested prior to dispatch. Batch documentation is available on request.

Previous batch CoAs are archived in the CoA library. For batch-specific CoA requests prior to purchase, contact support@veloxpeps.com.

Frequently Asked Research-Use Questions

What purity is Velox Peptides Ipamorelin?
Ipamorelin is supplied at ≥99% HPLC-verified purity. Batch documentation is available on request.
How is Ipamorelin supplied and reconstituted for research use?
Ipamorelin is supplied as a lyophilised powder in sterile single-use vials. For in vitro research use, reconstitution is performed with bacteriostatic water. See the reconstitution calculator for volume calculations based on required concentration.
What is Ipamorelin used for in preclinical research?
Ipamorelin is studied in the peer-reviewed literature as a selective growth hormone secretagogue acting at the ghrelin receptor (GHS-R1a). Velox Peptides supplies Ipamorelin strictly as a research reagent for in vitro use by qualified researchers. It is not a medicinal product and is not for human or veterinary consumption.
What is the CAS number for Ipamorelin?
The CAS registry number for Ipamorelin is 170851-70-4.
What makes Ipamorelin a selective growth hormone secretagogue?
In preclinical models, Ipamorelin stimulates growth hormone release through the ghrelin receptor (GHS-R1a) with little effect on the release of other pituitary hormones such as cortisol, prolactin or ACTH. This selectivity is why it is widely used as a research tool for isolating growth-hormone-secretagogue signalling, in contrast to earlier GHRPs such as GHRP-2 and GHRP-6 which show broader hormonal effects.
How is Ipamorelin studied alongside GHRH analogues like CJC-1295?
Ghrelin-receptor agonists such as Ipamorelin and GHRH-receptor agonists such as CJC-1295 act on two distinct pathways in pituitary somatotroph cells. In research models they are frequently examined together because the two mechanisms can amplify growth hormone release synergistically, making the pairing a common subject of growth-hormone-secretagogue research.
How quickly is my order dispatched and delivered?
Orders placed before 2pm on a working day are dispatched the same day via Royal Mail Tracked 24, typically arriving in 1–2 working days, with tracking emailed on dispatch. UK shipping is free over £80, and EU shipping is available.
How do I pay, and is it secure?
We accept Pay by Bank - an instant, secure open-banking payment via Fena, where you authorise the payment in your own banking app and no card details are stored on our site. Manual UK bank transfer is available as a fallback. Orders are dispatched within 24 hours of cleared payment.
Does my order include a certificate of analysis?
Yes. Every order includes a batch-specific Certificate of Analysis documenting third-party HPLC purity and mass-spectrometry identity confirmation, emailed with your order confirmation. Previous batch CoAs are archived in our CoA library.

For in vitro research use only. Ipamorelin is supplied solely as a research reagent for qualified professionals conducting in vitro or animal-model studies. It is not a medicinal product within the meaning of the Human Medicines Regulations 2012. It has not been evaluated by the MHRA or FDA. It is not intended for human or veterinary consumption, diagnosis, treatment, cure, or prevention of any condition. Any use outside lawful scientific research is outside the scope of sale.

Compliance statement. Velox Peptides supplies research reagents for in vitro use by qualified researchers. Every compound is sold strictly as a research reagent. No product is a medicinal product within the meaning of the Human Medicines Regulations 2012. No product has been evaluated by the MHRA or FDA. No product is intended for human or veterinary consumption, diagnosis, treatment, cure, or prevention of any condition. Any use outside lawful scientific research is outside the scope of sale. See our Research Use Policy and MHRA Statement.