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99.2%
412
25.4k
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Quality breakdown

Six checkpoints every vial passes through.

01

SPPS Synthesis

Fmoc-Festphasen-Chemie auf CEM Liberty Synthesizer. Sequenz für Sequenz, jede Kupplung mit Doppel-Test.

3 days · 250 mg–50 g scale
02

Cleavage

Abspaltung vom Harz mit TFA-Cocktail (95 % TFA / 2,5 % H₂O / 2,5 % TIS). Fällung in eiskaltem Diethylether.

90 min · cold-precipitation
03

Prep HPLC

Reinigung auf semipräp. C18 (Phenomenex Luna, 21.2 × 250 mm). Fraktionssammlung, > 99 % Reinheit als Ziel.

≥ 99 % HPLC target
04

Lyophilization

Gefriertrocknung im Christ Beta 2-8 LSCplus bei −80 °C. Resultat: weißes, pulverförmiges Lyophilisat.

48 h · −80 °C
05

Analytical QC

Analytische HPLC + ESI-MS gegen Referenzstandard. LAL-Endotoxintest unter 0,5 EU/mg. Identitäts- und Reinheits-Freigabe.

3 separate tests
06

Cold Chain Pack

Abfüllung in Klarglas-Vials mit Aluminium-Crimp. Versand in vakuumisolierten Beuteln mit Phase-Change-Material.

4 °C maintained 96 h
The team

Behind every batch.

LI
Quality Desk
Founder · Head of QA

Owns batch review, CoA structure and research-only release language before products appear in the catalog.

SE
Synthesis Desk
Synthesis Lead

Maintains synthesis records, scale notes and material specifications for each listed peptide batch.

MV
Analytics Desk
Analytics Lead

Reviews HPLC, ESI-MS and supporting analytical notes so each CoA remains tied to a specific batch.

The difference

Fewer promises. More evidence.

A calm comparison of the points that matter for research purchasing, documentation and batch review.

Unclear supplier
Voices from the lab

Notes from research and procurement.

★★★★★

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MV
Academic lab buyer
University Heidelberg · Biochemistry
★★★★★

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SK
Formulation research lead
Cosmetic Lab GmbH · Hamburg
★★★★★

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LV
Independent research office
Independent research · Berlin
4.92/5internal satisfaction survey
97%B2B and laboratory inquiries
< 0.3%documented deviations
Our story

A brand for quiet, documented laboratory quality.

2018

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2019

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2021

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2023

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2026

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As seen in the research community
Our promise

Every vial documented. Every batch traceable.

Eterna Nex supplies research peptides with batch-specific analytics, clear labelling and restrained documentation. If a documented deviation from the stated specification is found, we review it with priority and replace qualified material.

✓
Research-only Not intended for human or animal use
⛌
Documented release HPLC, ESI-MS and batch file before dispatch
⏱
Controlled logistics Temperature-aware packaging with a clear dispatch record