Read our latest blog: LinkLight™ Protein-Protein Interaction AssaysLearn More

Let’s Discover Together

Elevating the standard for data quality and scientific partnership

0+

Years

0+

Clients worldwide

0+

Projects per year

0+

Citations

Consultative Drug Discovery and Development

Reaction Biology delivers reliable, timely data that moves novel therapeutics forward, helping reduce risk at every milestone

Pharmaceutical, biotech, and academic teams partner with us to advance compounds from early discovery through clinical development, guided by rigorous quality standards and gold-standard methodologies.

Across four sites across North America and Europe, our expertise spans multiple modalities, target classes, and therapeutic areas.

Our expansive target library and panel selection includes hundreds of validated proteins and over 1,000 cell lines, plus the industry’s largest kinase library.

Since 2001, we have turned complex scientific challenges into development-ready candidates, supporting hundreds of oncology programs towards IND.

About Us

What We Stand For

Qualities driving our exceptional track record

Consultative

An Extension of Your Team

Receive expert planning, guidance, and data interpretation directly from the scientists running your experiments.

Responsive

Matching Your Speed and Rigor

Avoid surprises and mitigate risk with proactive communication from our dedicated teams. Responses to new requests within 24 hours and rapid quoting.

Proven

25 Years of Expertise

Our validated, gold-standard methodologies and deep scientific expertise have advanced novel therapies toward IND across oncology, metabolic disease, and other critical indications

Trusted Globally

Reaction Biology has been my #1 go-to CRO for biochemical and cellular activity assessment since 2020. They excel at literally everything: cost-efficiency, communication and collaboration, robustness of data, and turnaround time.  I have had the privilege of co-initiating many small molecule programs over the years. The first CRO that I make room for in the budget is Reaction Biology, and the first email I send to get things started is their client services team.

Joel D. Moore, PhD
Senior Vice President Non-Clinical Development Ropirio Therapeutics, Inc.

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)