Innovative chemistry to illuminate biology

Novel fluorescent tools for drug discovery.

We research, develop and commercialize innovative life science tools for drug discovery.

At Celtarys, our vision is to advance drug discovery and precision medicine by developing innovative chemistry.

Our mission is to transition scientists to superior fluorescent tools for robust, safe and sustainable biomedical research.

Featured products and services by Celtarys

Discover our collection of ready-to-use kits, fluorescent ligands, biotinylated ligands, and CRO services.

Ready to use kits

Custom developments

Screening services

Portfolio of fluorescent ligands

Patented conjugation technology for superior fluorescent ligands with unmatched speed and biological performance.

Radioligands have been the gold standard in competitive binding assays in HTS because they do not interfere with the pharmacophore-receptor binding. However, radioactivity raises serious operational and safety problems.

Featured news and blog posts by Celtarys

Stay up to date with the latest news from Celtarys. Discover our corporate updates, events, and scientific highlights.

11 August 2026
PROTAC hook effect

PROTAC Hook Effect: How E3 Ligase and Target Protein Binding Affinity Shapes Degradation Efficiency

The PROTAC hook effect limits degrader potency at high concentrations. See how E3 ligase and target protein binding affinities shape degradation outcomes.
8 July 2026
VHL, CRBN and Emerging Ligases like DCAF

VHL, CRBN, and Emerging Ligases like DCAF: Selecting E3 Ligase Handles for PROTAC Drug Discovery

VHL, CRBN and emerging E3 ligases like DCAF: compare handles for your PROTAC program and run fluorescence-based binding assays with ready-to-use kits.
25 May 2026
Fluorescence Polarization Binding Assays for E3 Ligases in Targeted Protein Degradation (TPD) Programs

Fluorescence Polarization Binding Assays for E3 Ligases in Targeted Protein Degradation (TPD) Programs

Targeted protein degradation (TPD) has reshaped drug discovery by eliminating disease-driving proteins through the cell’s own degradation systems, rather than merely blocking their activity.

Our research, from scientists to scientists.

As scientists we understand the unmet research needs. With our collaborators we jointly identify opportunities for improvement in drug discovery.
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