Mass spectrometry reimagined for smarter, faster drug discovery

What is native mass spectrometry?

Native mass spectrometry is a powerful analytical approach for detecting molecular interactions under conditions that preserve biologically relevant complexes.

nMS sees what other methods don’t

It works directly in native samples, with no assay development, label-free, and without protein immobilisation.



This allows discovery teams to move faster, reduce risk and uncover interactions that might otherwise go undetected.

Our discovery platform

The fastest path through chemical space

CARMS accelerates drug screening into three key steps, all happening within a single instrument

massaffinity technology 1
Reactive building blocks are mixed to create compound pools. Diversity is tuned to the target.
massaffinity technology 2
Using our proprietary CARMS platform, binders are identified and ranked. In solution, label-free.
massaffinity technology 3
The next compound pools are designed based on the binders structures and synthetic pathways. The cycle repeats.

How is native mass spectrometry different?

We don’t work around complexity, we cut through it.

Traditional hit identification often depends on purified proteins, custom assay development, and proxy readouts that can move discovery away from real biological context.

These steps can be slow, costly, and can miss interactions that matter.

nMS gives discovery teams a direct way to observe molecular interactions, helping identify promising binders while preserving the biological complexity that shapes real drug–target behaviour.

What only nMS can do

Label free

nMS works with untagged proteins in solution, eliminating the need for immobilisation or proxy readouts

Built-in filtering eliminates false positives

Selective mass detection ensures only true binders are captured.

No custom assays required

There is no need to build custom assays — binding is directly detected using mass spectrometry

High-throughput, even in complex samples

Highly multiplexed screening in lysates and mixtures without compromising biological fidelity.

Captures biological context

Go beyond binary target–ligand interactions — nMS captures the full complex, including all subunits and co-factors.

Delivers results in weeks, not months

By skipping purification and assay setup, CARMS dramatically reduces early-stage timelines.

Multi-stage nMS confirms true binding

Complexes are dissociated using controlled energy, observing and confirming each component

See real interactions. Prioritise the right hits.

Native mass spectrometry services 

MassAffinity supports your early discovery needs.

We offer multiple native mass spectrometry workflows, from target–ligand characterisation to screening

  • Target-informed compound and library design
  • Collaboration-ready synthesis strategies
  • Pooled and multiplexed compound generation
  • Macrocycles, peptides and mid-sized molecules
  • Non-canonical residues and constrained structures
  • Traceable library design for downstream deconvolution
  • Chemistry workflows built for native MS screening
  • Design inputs for future active-learning cycles

Make

  • Direct binder screening under native conditions
  • Fragment, small-molecule and macrocycle screening
  • Protein–ligand interaction detection
  • Selectivity profiling across related targets or isoforms
  • Ligand-induced complex formation analysis
  • Molecular glue, PROTAC and ternary complex studies
  • Protein complex, subunit and cofactor characterisation
  • Hit confirmation from pooled or multiplexed samples

Identify

  • Binding affinity and interaction-strength measurement
  • Analogue and chemical series comparison
  • Competitive binding and displacement studies
  • Hit ranking using experimental interaction data
  • Structure and sequence deconvolution by MS/MS
  • AI-ready datasets for model training and validation
  • Prediction-to-experiment feedback loops
  • Data generation to guide the next design cycle

Improve

How our technology supports the drug discovery pipeline?

The starting point for smarter drug discovery

MassAffinity targets the earliest phase of drug discovery, where many programs stall due to undruggable targets, assay limitations or biological complexity.

Mass Affinity
MassAffinity
Asset
Indication
Target ID
Target Validation
Hit ID
Hit-to-Lead
Preclinical Testing
Clinical Trials
Regulatory approval
Market Release