Peptide APIs
cGMP FDA inspected Solid Phase Synthesis Solution Phase Synthesis

Senn Chemicals – your CDMO
for SWISS quality peptides and amino acid derivatives

Made in Switzerland From early research to commercial phase

to Senn

SENN CHEMICALS has been providing custom manufacturing services to pharmaceutical, biotechnology, diagnostic and cosmetic companies worldwide since 1963. Founded by Guido Senn in Dielsdorf, near Zurich, Switzerland, Senn Chemicals' focus today is on the manufacturing of peptides, peptide fragments, amino acid derivatives and small molecules. We are cGMP approved and have been inspected several times by the US FDA.

Senn Chemicals?
- the human element at work

We are an independent, privately owned company comprised of a dedicated team of professionals with a singular purpose: your success. To us, you are not a project. You are not only a client, you are our strategic partner. We know our success depends on yours, which inspires us to provide a level of commitment unprecedented in our industry. From the CEO to the lab technician, we are fully engaged and available to you. Every day. Let us show you the difference a true manufacturing partnership can make.

News | 02.12.2021

News | 20.10.2021

TIDES Europe

Senn Chemicals will attend - TIDES Europe at Sheraton Brussels Airport Hotel - Come and visit us at booth 29!

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News | 20.10.2021

28 September 2021: Webinar "Theranostics, a game-changer in diagnostics and cancer therapy?"

In the Webinar our fantastic speakers Dr. Matthias Friebe, Dr. Phillip E Harris and Dr. Samuele Cazzamalli discussed and shared the recent developments, challenges and trends in the field of radiopharmaceuticals.

You missed the Event?

-> Just contact us though the Website or directly by mail at to receive further information!

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Dr. Daniel Müller – CEO of Senn Chemicals AG
Dr. Daniel Müller – CEO of Senn Chemicals AG

Senn Chemicals serves the needs of customers worldwide in the pharmaceutical, biotechnology, cosmeceutical, and nutraceutical fields. Senn Chemicals offers products and services of exceptional value through a combination of state-of-the-art cGMP production facilities, decades of chemical manufacturing experience, a dedicated team of professionals, and commitment to customer service.

Dr. Daniel Müller

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Phone: +41 43 422 24 00 |