# Prime Stack (Tesamorelin · Ipamorelin · MOTS-c vials)

> Kit of three vials — tesamorelin, ipamorelin and MOTS-c — for GH-axis and mitochondrial studies

All products are sold strictly for laboratory research use only. Not for human or veterinary use.

- Web page: https://peptidemedixeu.com/en/products/prime-stack/
- Brand: Peptide Medix EU
- Category: [Growth Hormone Blends](https://peptidemedixeu.com/en/collections/growth-hormone-blends/)
- Purity: ≥99% by HPLC per vial; separate lot-matched COA for each
- from €144 (EUR)

## Sizes and prices (EUR)

| Size | Price | SKU |
| --- | --- | --- |
| 3-vial stack | €144 | PRIME-STACK-3-VIAL-STACK |

_Catalog prices at build time; the web page and checkout are authoritative._

## Specifications

- **Form:** Lyophilized powder in each vial, individually capped
- **Purity:** ≥99% by HPLC per vial; separate lot-matched COA for each
- **Storage (lyophilized):** −20 °C, protected from light and moisture
- **Storage (reconstituted):** 2–8 °C, protected from light
- **Product type:** Multi-vial research kit — three separately sealed vials
- **Kit contents:** One tesamorelin vial, one ipamorelin vial, one MOTS-c vial
- **Tesamorelin:** CAS 218949-48-5 · C221H366N72O67S · 5135.86 g/mol
- **Ipamorelin:** CAS 170851-70-4 · C38H49N9O5 · 711.85 g/mol
- **MOTS-c:** CAS 1627580-64-6 · C101H152N28O22S2 · 2174.55 g/mol
- **Tesamorelin class:** GHRH(1-44) analogue with N-terminal trans-3-hexenoyl group
- **Ipamorelin sequence:** Aib-His-D-2-Nal-D-Phe-Lys-NH2
- **Research areas:** GHRH receptor signalling, GHS-R1a pharmacology, AMPK and mitochondrial metabolism
- **Reconstitution:** Each vial prepared separately at protocol-defined concentration

## Description

This stack links growth-hormone-axis research with mitochondrial biology: tesamorelin, ipamorelin and MOTS-c, each in its own sealed lyophilised vial. Two of them act on the pituitary, via different receptors; the third works at the mitochondrion and has nothing to do with the somatotropic axis.

Tesamorelin is a stabilised GHRH analogue — the complete GHRH(1-44) sequence with a trans-3-hexenoyl group on its N-terminus that fends off dipeptidyl peptidase-4. Ipamorelin, a pentapeptide agonist of the ghrelin receptor GHS-R1a, was described as selective when first characterised, shifting cortisol and prolactin only slightly in the animal models examined. MOTS-c is a different sort of molecule altogether: 16 residues encoded in the mitochondrial 12S rRNA gene, investigated for its links to AMPK signalling and metabolic balance.

With the three kept apart, a study can run the GHRH-receptor, ghrelin-receptor and mitochondrial arms independently, or combine them in any ratio the design needs. Each vial is HPLC-assayed to ≥99% purity and comes with its own lot certificate. Research material for laboratory use only.

## Frequently asked questions

### Tesamorelin versus sermorelin — what's the difference?

Sermorelin is the shortened GHRH(1-29) fragment; tesamorelin is the entire 44-residue sequence with an N-terminal trans-3-hexenoyl group that resists DPP-4. Both act on the GHRH receptor, but tesamorelin is the more stable of the two.

### What is MOTS-c doing alongside two GH-axis peptides?

It covers a separate level of biology. Tesamorelin and ipamorelin act at pituitary receptors, while MOTS-c is a mitochondria-encoded peptide researched for AMPK and cellular energy metabolism — so the kit lets one panel address endocrine and mitochondrial arms independently.

### Is there an individual COA for every vial?

Yes. The three vials come from separate production lots, each released with its own certificate of HPLC identity and purity for that peptide. You can request the current certificates before ordering.

### Which of the three is most delicate to handle?

Tesamorelin. At about 5,136 g/mol it is the biggest molecule in the kit and the most prone to shear damage, so add bacteriostatic water slowly along the glass and swirl — never shake or vortex.

### Can the vials be opened at different stages of a study?

Yes. Unopened lyophilised vials kept sealed at −20 °C, away from light and moisture, remain stable for well over a year, so you can bring components in phase by phase instead of preparing everything at once.

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All products offered on this website are intended solely for in-vitro laboratory research and development by qualified professionals. They are not drugs, foods, cosmetics or dietary supplements, and are not intended to diagnose, treat, cure or prevent any disease. Products must not be introduced into humans or animals in any manner. By purchasing, you confirm that you are a qualified researcher and accept full responsibility for handling and storage in accordance with applicable laws.

Peptide Medix EU · https://peptidemedixeu.com/en/products/prime-stack/