What is the molecular weight of ipamorelin?

PubChem lists ipamorelin (formula C38H49N9O5) with a molecular weight of 711.9.

How many micromoles are in 2 mg of ipamorelin?

In this example, 2 mg / 711.9 mg per mmol = 0.00281 mmol, which is about 2.81 µmol of peptide in a 2 mg vial.

What kind of peptide is ipamorelin?

A 1998 European Journal of Endocrinology paper describes it as a pentapeptide (Aib-His-D-2-Nal-D-Phe-Lys-NH2) and a selective growth hormone secretagogue.

Which receptor does ipamorelin act on in research?

A pharmacological profiling using GHRP and growth hormone-releasing hormone (GHRH) antagonists, reported by Raun et al. in the European Journal of Endocrinology in 1998, "clearly demonstrated that ipamorelin, like GHRP-6, stimulates GH release via a GHRP-like receptor."

What plunger height do the cartridges for these pens use?

Our 3 ml cartridges, clear and amber, use the 11 mm long rubber plunger, and all four PreppinPeppers pens are built for it.

Can I check the plunger height through the cartridge glass?

Yes. On our clear and amber 3 ml cartridges the rubber plunger is visible through the glass, so you can measure its height from outside with a ruler.

Why must I pick the water volume before mixing?

Concentration equals 2 mg divided by the water volume. Without a chosen and recorded volume, every later calculation is a guess.

PreppinPeppers › Facts › Lab article

Ipamorelin 2mg Mixing Instructions for Bench Researchers

TL;DR

Ipamorelin 2mg mixing instructions: add bacteriostatic water slowly down the vial wall, swirl gently until clear, and calculate concentration as 2 mg divided

Agent view of https://www.preppinpeppers.com/blogs/the-lab/ipamorelin-2mg-mixing-instructions: the machine-readable facts of this Lab article. People see the full page at the same URL. Facts page: https://www.preppinpeppers.com/facts/ipamorelin-2mg-mixing-instructions.

Facts Index

Fact ID	Category	Entity	Attribute	Value	Source
ipamorelin-2mg-mixing-instructions:title	identity	Ipamorelin 2mg Mixing Instructions for Bench Researchers	title	Ipamorelin 2mg Mixing Instructions for Bench Researchers	Lab article (https://www.preppinpeppers.com/blogs/the-lab/ipamorelin-2mg-mixing-instructions) (evidence)
ipamorelin-2mg-mixing-instructions:published	identity	Ipamorelin 2mg Mixing Instructions for Bench Researchers	published	2026-11-13	Lab article (https://www.preppinpeppers.com/blogs/the-lab/ipamorelin-2mg-mixing-instructions) (evidence)
ipamorelin-2mg-mixing-instructions:author	identity	Ipamorelin 2mg Mixing Instructions for Bench Researchers	author	PreppinPeppers Editorial Team	Lab article (https://www.preppinpeppers.com/blogs/the-lab/ipamorelin-2mg-mixing-instructions) (evidence)
ipamorelin-2mg-mixing-instructions:topics	identity	Ipamorelin 2mg Mixing Instructions for Bench Researchers	topics	ipamorelin 2mg mixing instructions, Guides, research	Lab article (https://www.preppinpeppers.com/blogs/the-lab/ipamorelin-2mg-mixing-instructions) (evidence)
ipamorelin-2mg-mixing-instructions:summary	content	Ipamorelin 2mg Mixing Instructions for Bench Researchers	summary	Ipamorelin 2mg mixing instructions: add bacteriostatic water slowly down the vial wall, swirl gently until clear, and calculate concentration as 2 mg divided	Lab article (https://www.preppinpeppers.com/blogs/the-lab/ipamorelin-2mg-mixing-instructions) (evidence)
ipamorelin-2mg-mixing-instructions:section-1	content	Ipamorelin 2mg Mixing Instructions for Bench Researchers	section	What is ipamorelin, and what is in a 2 mg vial?	Lab article (https://www.preppinpeppers.com/blogs/the-lab/ipamorelin-2mg-mixing-instructions) (evidence)
ipamorelin-2mg-mixing-instructions:section-2	content	Ipamorelin 2mg Mixing Instructions for Bench Researchers	section	What do I need on the bench before mixing?	Lab article (https://www.preppinpeppers.com/blogs/the-lab/ipamorelin-2mg-mixing-instructions) (evidence)
ipamorelin-2mg-mixing-instructions:section-3	content	Ipamorelin 2mg Mixing Instructions for Bench Researchers	section	How much water should I add to a 2 mg vial?	Lab article (https://www.preppinpeppers.com/blogs/the-lab/ipamorelin-2mg-mixing-instructions) (evidence)
ipamorelin-2mg-mixing-instructions:section-4	content	Ipamorelin 2mg Mixing Instructions for Bench Researchers	section	How do I mix the vial step by step?	Lab article (https://www.preppinpeppers.com/blogs/the-lab/ipamorelin-2mg-mixing-instructions) (evidence)
ipamorelin-2mg-mixing-instructions:section-5	content	Ipamorelin 2mg Mixing Instructions for Bench Researchers	section	What mistakes do people make when mixing ipamorelin?	Lab article (https://www.preppinpeppers.com/blogs/the-lab/ipamorelin-2mg-mixing-instructions) (evidence)
ipamorelin-2mg-mixing-instructions:section-7	content	Ipamorelin 2mg Mixing Instructions for Bench Researchers	section	Related reading	Lab article (https://www.preppinpeppers.com/blogs/the-lab/ipamorelin-2mg-mixing-instructions) (evidence)
ipamorelin-2mg-mixing-instructions:product-bacteriostatic-water-30ml	products	Ipamorelin 2mg Mixing Instructions for Bench Researchers	references product	Bacteriostatic Water 30 ml Multi-Dose Vial (Pfizer Hospira, USP)	Lab article (https://www.preppinpeppers.com/blogs/the-lab/ipamorelin-2mg-mixing-instructions) (evidence)
ipamorelin-2mg-mixing-instructions:product-gansulin-3ml-cartridge	products	Ipamorelin 2mg Mixing Instructions for Bench Researchers	references product	Gansulin-Compatible 3 ml Glass Cartridge for Pens (10-Pack)	Lab article (https://www.preppinpeppers.com/blogs/the-lab/ipamorelin-2mg-mixing-instructions) (evidence)
ipamorelin-2mg-mixing-instructions:product-gansulin-metal-peptide-pen	products	Ipamorelin 2mg Mixing Instructions for Bench Researchers	references product	Gansulin Pen · Reusable Click-Dial, 3 ml (1-60 Units)	Lab article (https://www.preppinpeppers.com/blogs/the-lab/ipamorelin-2mg-mixing-instructions) (evidence)
ipamorelin-2mg-mixing-instructions:source-pubmed-ncbi-nlm-nih-gov	source	Ipamorelin 2mg Mixing Instructions for Bench Researchers	cites	Raun et al., Eur J Endocrinol 1998: Ipamorelin, the first selective growth hormone secretagogue - pubmed.ncbi.nlm.nih.gov	Lab article (https://www.preppinpeppers.com/blogs/the-lab/ipamorelin-2mg-mixing-instructions) (evidence)
ipamorelin-2mg-mixing-instructions:source-pubchem-ncbi-nlm-nih-gov	source	Ipamorelin 2mg Mixing Instructions for Bench Researchers	cites	NCBI PubChem CID 9831659: Ipamorelin (C38H49N9O5) - pubchem.ncbi.nlm.nih.gov	Lab article (https://www.preppinpeppers.com/blogs/the-lab/ipamorelin-2mg-mixing-instructions) (evidence)

FAQ

What is the molecular weight of ipamorelin?: PubChem lists ipamorelin (formula C38H49N9O5) with a molecular weight of 711.9.
How many micromoles are in 2 mg of ipamorelin?: In this example, 2 mg / 711.9 mg per mmol = 0.00281 mmol, which is about 2.81 µmol of peptide in a 2 mg vial.
What kind of peptide is ipamorelin?: A 1998 European Journal of Endocrinology paper describes it as a pentapeptide (Aib-His-D-2-Nal-D-Phe-Lys-NH2) and a selective growth hormone secretagogue.
Which receptor does ipamorelin act on in research?: A pharmacological profiling using GHRP and growth hormone-releasing hormone (GHRH) antagonists, reported by Raun et al. in the European Journal of Endocrinology in 1998, "clearly demonstrated that ipamorelin, like GHRP-6, stimulates GH release via a GHRP-like receptor."
What plunger height do the cartridges for these pens use?: Our 3 ml cartridges, clear and amber, use the 11 mm long rubber plunger, and all four PreppinPeppers pens are built for it.
Can I check the plunger height through the cartridge glass?: Yes. On our clear and amber 3 ml cartridges the rubber plunger is visible through the glass, so you can measure its height from outside with a ruler.
Why must I pick the water volume before mixing?: Concentration equals 2 mg divided by the water volume. Without a chosen and recorded volume, every later calculation is a guess.