About us

Onyx Scientific is a contract development and manufacturing organisation (CDMO) specialising in API development and manufacturing.

Good chemistry is at the core of everything we do. From our facilities in the UK and US, our teams will support your drug substance development and manufacturing from the moment a lead molecule is identified, taking it into Phase I studies and right through to commercial manufacture. Our expertise and capabilities mean we can provide a comprehensive and integrated CMC 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 to enable us to apply the very best technical knowledge and experience to identify and resolve challenges.

We offer integrated CMC services

We have an integrated team with development and manufacturing capabilities, solid state chemistry and analytical laboratories all housed under one roof. Our comprehensive and collaborative CMC offering means we can work with our customers to deliver better solutions to achieve important milestones.

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

Through identifying issues and taking a consultative approach, our customers can trust us to take care of their project. From start to finish, we’ll be there to guide you through your 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