Drug Discovery CRO Services | Reaction Biology

Drug Discovery and Development Services

Reaction Biology is a global leader in contract research for preclinical drug discovery. We specialize in transforming complex scientific challenges into development-ready therapeutic candidates.

For over 20 years, we’ve partnered with leading pharmaceutical, academic, and biotech organizations to advance their compounds and research pipelines. Our strategically located facilities in the US and EU ensure streamlined operations, reduced turnaround times, and secure handling of your most sensitive research materials.

With an integrated assay portfolio and expansive target library, including hundreds of validated proteins plus over 1,000 cell lines, our custom and tailored solutions are backed by global, multidisciplinary scientific teams. We’re proud of our successful track record, including therapies that have received regulatory approval from the FDA and other global regulatory agencies.

About Us

What people are saying

Reaction Biology Europe has provided their services for several projects with us, including establishing an orthotopic tumor model and PK/PD studies. I was very impressed, not only by their level of expertise and professionalism but also by their enthusiasm and drive to deliver. The insightful advice they provide has been instrumental to our successes and their collegial and “can do” attitude make them a pleasure to team up with!

Prof Matthias Klugmann

Scientific Expert at Boehringer-Ingelheim

You are our No 1 CRO for cancer studies and while we know that we are sometimes a bit difficult (many protocol changes on short notice) we appreciate even more your flexibility and your motivation and attitude to deliver correct results. We look forward to many more studies with you to come.

Dr Claus Kremoser

Cofounder and Chairman of Supervisory Board

I have worked with Reaction Biology Europe and Reaction Biology Corp. for more than 5 years on several interesting projects. These have ranged from routine enzyme screening to more complex kinome-scan and in-cell target engagement work. The results of these endeavors have led to a series of top-tier publications. This coupled with exceptional customer service means I have no hesitation to recommend Reaction Biology Corp. and Reaction Biology Europe as research partners.

Dr Christopher Asquith

Department of Pharmacology, School of Medicine, University of North Carolina at Chapel Hill

Reaction Biology Europe has provided their service for numerous projects with us, especially on multiple kinase assays (under the name ProQinase) which have guided our way through drug development. I was very impressed not only by their level of expertise and professionalism but also by their enthusiasm and drive to deliver without delay. The insightful advice they provide has been instrumental to our successes, and the reproducibility, quality, and reporting of the results have been outstanding throughout the many years we have been working together.

Dr Laurent Meijer

Chair & Chief Scientific Officer at Perha Pharmaceuticals & ManRos Therapeutics

We have worked with Reaction Biology Europe for 3 years on in vivo drug development assays. They have provided their services from routine PK through efficacy and custom BLI studies in tumor models, consistently generating high-quality results that guided our development process. Their expertise, responsiveness, and professionalism make Reaction Biology stand out from among the usual CROs, and we are happy to recommend them as research partners.

Dr Oliver Thorn-Seshold

Department of Pharmacy, Ludwig-Maximilian's University of Munich (LMU)

Read all client testimonials