Fragment Based Screening
FBS Capabilities 
Screening
- Ligand Observe NMR methods
- Saturation Transfer Difference (STD)
- waterLOGSY (wLOGSY)
- Carr-Purcell-Meiboom-Gill (CPMG)
Library preparation(either in house fragment library or client provided)
- Identity, solubility, purity
- Automated smart pooling
- Positive control at regular intervals
Follow-up analysis
- Validation (follow-up singletons)
- Rank-order; cluster
Target Generation
- Protein synthesis and purification
Target Preparation
- Screen design
- Sample optimization
- Experimental optimization
Complimentary Capabilities
- Orthogonal screening methods e.g. SPR, TSA
- X-Ray Crystallography
- Computational Chemistry
- Chemical elaboration to support optimization
- Biological Assays design and support
Fragment Library Screening Options
Fragment Library – Commercial and Proprietary
Our fragment based library of >2000 compounds is a combination of:
- Proprietary fragments from internal small molecule collections
- Proprietary fragments designed from FDA approved drugs
- 19F- containing fragments
- Covalent fragments
- Commercial fragments
We are also able to screen libraries of fragments provided by our clients:
Screening external libraries
- Client-provided
- Client-selected commercial libraries
- Custom commercial libraries
Additional capabilities
- NMR-based compound quality check
- Identity
- Purity
- Solubility
- Fragment pooling
- Randomized pooling
- Smart pooling
Versatile Biophysical Screening Methods
Our primary recommendation is to conduct an initial fragment screen using NMR as a the primary technique with confirmation by orthogonal methods. ChemPartner has access to high field NMR (600MHz or 700MHz) with cryoprobe technology
- NMR STD
- NMR wLOGSY, CPMG
- 19F NMR
- TSA, SPR
Fragment hits using three NMR techniques