Radiopharmaceuticals

Radiopharmaceutical Precursor Development & GMP Manufacture

From route scouting to commercial supply, we develop and manufacture the chelators, linkers and precursor molecules that radiopharmaceuticals are built on, under one integrated, GMP-accredited quality system.

Radiopharmaceuticals
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Radiopharmaceutical precursor programmes usually run across a peptide CRO, a chelator specialist, a separate GMP site and a radiolabelling partner, with a technology transfer and a fresh risk at every step. 

We bring precursor route scouting, chelator and linker conjugation, trace-metal-controlled analytics and GMP manufacture together under one quality system, covering the receptor-targeted and next-generation precursor chemistry that sits upstream of radiolabelling, from early candidates through to validated commercial supply.

Our Integrated Workflow
Scout
Route scouting and retrosynthesis for precursor, chelator and linker chemistry, from preclinical candidates onward.
Develop
Process development and optimisation, with DoE-driven robustness and impurity control appropriate to phase.
Validate
Analytical method development and validation, including the trace-metal (ICP-MS) control that governs radiolabelling performance.
Manufacture
Non-GMP and GMP manufacture from gram to commercial scale, across precursors, chelators, linkers and GMP excipients.
Finish
Solid and liquid aliquoting plus bulk lyophilisation, with batch sizes up to 10,000 vials per run.
Support
Regulatory support and ICH stability programmes, including DMF/ASMF documentation for clinical and commercial filings.
Our Expertise
Chelator & Linker Chemistry
DOTA, DOTAGA, NOTA, NODAGA and related bifunctional chelator systems — covering conjugation, purification and stability studies for diagnostic, therapeutic and theranostic radiopharmaceutical development. Chelator selection and process design are tailored to the intended radiometal, targeting vector and downstream radiolabelling conditions.
Peptide & Oligonucleotide Synthesis
Automated solid- and liquid-phase synthesis, mg to dozens-of-grams scale — extending to polycyclic and bicyclic architectures through established cyclisation chemistry, plus non-natural amino acid incorporation.
Expanded Chemistry Capability
Synthesis expertise extends beyond peptides and oligonucleotides to polymers, nano-lipids, hydrogels and nucleosides — supporting conjugate, formulation and delivery-vehicle work alongside precursor and peptide programmes.
Radiopharmaceutical Precursor Manufacture
Custom development and GMP manufacture of cold precursor molecules, scaling from small-scale R&D through kilo-lab to pilot-plant commercial batches.
Fill & Finish
Solid and liquid aliquoting and bulk lyophilisation, with development studies to confirm process robustness and GMP compliance.
Trace-Metal & Analytical Control
ICP-MS and a full analytical suite to control the metal impurities that most often determine radiolabelling performance downstream.

Quality & Regulatory Infrastructure

GMP-accredited since 2015 

ANSM-certified, most recently audited in 2022, with a quality system built on 130+ procedures, 80+ instruction manuals and 300+ forms and templates. 

FDA-registered since 2021 

Two mock inspections completed to date, with a Pre-Approval Inspection expected in 2026. 

Audit-ready, by design 

Five DMFs already accepted across the EU, Switzerland and the US, with ten more in preparation, and 10+ client audits hosted every year. 

What You Can Achieve

One End-to-End Partner
Route scouting through commercial GMP supply, without stitching together multiple specialist CDMOs and tech transfers.
De-Risked Trace-Metal Control
ICP-MS-backed analytics catch the impurities that cause radiolabelling to fail, before they reach the clinic.
Alpha-Emitter Readiness
Expertise spanning established chelator platforms and bespoke chelator development for emerging radionuclides, including Ac-225 and Pb-212.
Faster Tech Transfer
Development and GMP manufacture under one quality system and one project team.
Regulatory Continuity
DMF/ASMF experience and an ICH Q7 quality system that travels with your molecule from precursor to filing.
Scale With Confidence
From milligram route scouting to commercial batches, without changing partners along the way.

Specialist Technologies

Solid-Phase Peptide Synthesis
Mg to dozens-of-grams scale, extending to polycyclic and bicyclic architectures through established cyclisation chemistry.
Chelator Conjugation & Purification
Automated chromatography (ELSD/UV) and electrodialysis across DOTA, DOTAGA, NOTA and NODAGA systems.
ICP-MS Trace-Metal Analysis
Quantifying the metal contaminants that compete with the intended radiometal during labelling.
GMP Reactors, Gram to Commercial Scale
Double-jacketed reactors from 0.1 L to 300 L, Nutsche filters, thin-film evaporators, up to 1,000L mixing vessels.
Lyophilisation & Fill-Finish
Bulk lyophilisation (2.2–6 L) and automated vial filling, batch sizes up to 10,000 units.
Stability & Performance Testing
ICH Q1A(R2) stability chambers, predictive trending, and PAT-enabled monitoring assess shelf-life, degradation, and performance under real-time and accelerated conditions.
Full Analytical Suite
GMP NMR, HPLC (UV, ELSD, SEC, Corona), chiral HPLC/SFC, LC-MS, LC-TOF, GC, IR, DSC, TGA.

Frequently Asked Questions

Are you GMP-accredited for radiopharmaceutical precursor manufacture?

Yes. Our site has held ANSM GMP certification since 2015 and has been FDA-registered since 2021, with a Pre-Approval Inspection expected in 2026 and five DMFs already accepted across the EU, Switzerland and the US. 

How do you control trace-metal impurities?

Through ICP-MS analysis built into our development and QC workflows. Metal contaminants such as iron, copper and zinc can compete with the intended radiometal during labelling, so we treat trace-metal control as a core part of precursor characterisation, not an afterthought.

 

Book a Consultation

Speak directly with our scientists about your development challenges and explore how we can support your programme.