Ipamorelin is a synthetic pentapeptide that acts on the ghrelin receptor (GHS-R1a) to trigger growth hormone release.

What is ipamorelin studied for?

Ipamorelin is studied as a selective growth hormone secretagogue. In early research it released growth hormone without the rise in cortisol and prolactin seen with older secretagogues such as GHRP-6.

Is there a CJC-1295 and ipamorelin blend?

Yes. CJC-1295 (no DAC) + Ipamorelin combines 5mg of each in one vial.

How is ipamorelin tested?

Every batch goes to an independent lab. The current batch was tested across three vials for purity (RP-HPLC), identity (LC-MS), net peptide content, endotoxins, heavy metals and sterility. Each batch's certificate of analysis is published on the lab results page.

How should ipamorelin be stored?

Keep the sealed vial in the refrigerator at 36–46°F (2–8°C), dry and away from light. As a freeze-dried powder it tolerates room temperature for weeks, which is why it ships without ice. Once reconstituted, keep it refrigerated between uses. More in our guide, Do peptides need to be refrigerated?

How much ipamorelin is in a vial?

Ipamorelin comes as a white lyophilized powder in a 10mg vial.

Is ipamorelin for human use?

No. Ipamorelin is sold for laboratory research use only.

10mg · 99%+ Purity

IPAMORELIN

Ipamorelin is a synthetic pentapeptide growth-hormone secretagogue and selective agonist of the ghrelin/GHS-R1a receptor.

$54.00

COA Tested 99%+ Purity Research Grade

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99.767% purity View COA

Certificate of Analysis

Ipamorelin 10mg · 3 vials tested by an independent lab · RP-HPLC / LC-MS

Batch 2026-IN390

Latest

99.767%

Average purity

Labeled content: 10mg
Net content: 10.32mg (+3%)
Vials tested: 3
Endotoxins: Pass
Heavy metals: Pass
Microbial sterility: Pass
Method: RP-HPLC / LC-MS
Tested: Jul 16, 2026

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Batch IN278

99.92%

Average purity

Labeled content: 10mg
Net content: 10.29mg (+3%)
Vials tested: 1
Endotoxins: Pass
Method: HPLC-UV
Tested: May 19, 2026

View full COA

Compound Information

Chemical and structural properties

What it is

What is Ipamorelin?

Ipamorelin is a synthetic pentapeptide growth-hormone secretagogue and selective agonist of the ghrelin/GHS-R1a receptor.

Class: Selective ghrelin-receptor agonist
Also known as: NNC 26-0161
Form: White lyophilized powder
Use: Research use only

Molecular profile

Compound Structure

CAS number: 170851-70-4
Molecular formula: C38H49N9O5
Molecular weight: 711.9 g/mol
Amino acids: 5
Sequence: Aib-His-D-2-Nal-D-Phe-Lys-NH2

PubChem · CID 9831659

Storage

Storage & Stability

Store cold
Protect from light
Keep dry

Lyophilized (powder) 2–8°C (36–46°F) Refrigerate · −20°C for long-term storage

Reconstituted 2–8°C (36–46°F) Refrigerate · use within 28 days

Solubility: Soluble in bacteriostatic water

Ipamorelin Overview

A selective growth hormone secretagogue, studied for clean, targeted growth hormone release.

Technical overview

Ipamorelin is a synthetic pentapeptide (Aib-His-D-2-Nal-D-Phe-Lys-NH2) developed by Novo Nordisk in the 1990s. It activates the ghrelin receptor (GHS-R1a) in the pituitary. In the original research it released growth hormone without raising cortisol or prolactin, which set it apart from earlier secretagogues such as GHRP-6.

Research applications

Researchers use ipamorelin to study growth hormone pulses, ghrelin-receptor signalling, and combinations with GHRH analogues such as CJC-1295 and sermorelin.

FAQs

What is ipamorelin?

Ipamorelin is a synthetic pentapeptide that acts on the ghrelin receptor (GHS-R1a) to trigger growth hormone release.
What is ipamorelin studied for?

Ipamorelin is studied as a selective growth hormone secretagogue. In early research it released growth hormone without the rise in cortisol and prolactin seen with older secretagogues such as GHRP-6.
Is there a CJC-1295 and ipamorelin blend?

Yes. CJC-1295 (no DAC) + Ipamorelin combines 5mg of each in one vial.
How is ipamorelin tested?

Every batch goes to an independent lab. The current batch was tested across three vials for purity (RP-HPLC), identity (LC-MS), net peptide content, endotoxins, heavy metals and sterility. Each batch's certificate of analysis is published on the lab results page.
How should ipamorelin be stored?

Keep the sealed vial in the refrigerator at 36–46°F (2–8°C), dry and away from light. As a freeze-dried powder it tolerates room temperature for weeks, which is why it ships without ice. Once reconstituted, keep it refrigerated between uses. More in our guide, Do peptides need to be refrigerated?
How much ipamorelin is in a vial?

Ipamorelin comes as a white lyophilized powder in a 10mg vial.
Is ipamorelin for human use?

No. Ipamorelin is sold for laboratory research use only.