Onyx is now licensed to manufacture commercial API from our UK facility

About us

Onyx Scientific is a small molecule CDMO specialising in process R&D and small molecule API manufacturing.

Good chemistry is at the core of everything we do. From our facilities in the UK and US, our teams will support the development and manufacture of your drug substance through every stage of its lifecycle; from the moment a lead molecule is identified, through to Phase I studies and commercial manufacture.

Our expertise and capabilities mean we can provide a comprehensive and integrated CMC chemistry offering tailored to your exact needs.

We're driven by science

Our chemists are at the heart of everything we do. All our project teams are led by chemists, ensuring that they have an overall vision and understanding of the project, future-proofing downstream development and identifying potential production issues ahead of time. This approach enables us to apply the very best technical knowledge and experience to identify and resolve challenges.

Integrated CMC services (Chemistry, Manufacturing and Controls)

Our integrated CMC services cover small molecule development and commercial manufacturing capabilities, process chemistry and analytical laboratories all on one site. Our chemists work alongside our quality assurance and analytical teams to provide feedback to reduce the risk of error and project deviation. The comprehensive and collaborative CMC service offering means that we can work with our customers to deliver better solutions to achieve important milestones.

We’ll treat your small molecule API as though it is our own

Through identifying issues and taking a consultative approach, we’ll develop efficient processes to increase productivity and create value. Our GMP chemistry-led approach means that our customers can trust us to take care of their project. From start to finish, we’ll be there to guide your small molecule drug substance through its journey.


  • “Onyx Scientific is one of the top development companies within the life sciences industry. They have a clear niche in how they integrate their process development, solid state and analytical services. I find their no nonsense, straight forward approach helpful and efficient and it makes my role as a consultant much easier. Their technical expertise is very strong, and I’d have no hesitation when it comes to recommending them for similar projects.”

    David Lathbury, Consultant
  • “Over the ten years we have worked with Onyx Scientific, they have continuously expanded their services and kept up to date with the demands of the industry. As such, Onyx Scientific now provides an end to end chemistry solution and continues to deliver an outstanding service.”

    Dr Daryl Rees, Chief Executive at Salupont Consulting