Pre-plated Fragment Screening Sets

Life Chemicals offers several Fragment Screening Sets as convenient and efficient starting points for fragment-based approach to drug discovery (FBDD) projects.

• Pre-plated 3D-shaped Fragment Set
• Pre-plated Covalent Fragment Screening Set
• Pre-plated Fluorine Fragment Cocktails
• Pre-plated Fsp³-enriched Fragment Set
• Pre-plated High-solubility DMSO-d6 Fragment Diversity Sets
• Pre-plated High-solubility Fragment Diversity Sets
• Pre-plated High-solubility Fragment Set

Please, contact us at orders@lifechemicals.com for any additional information and price quotations.

Key features

• Novel fragment-like screening compounds, synthesized in-house

• Optimized for fragment-based lead generation and early hit discovery
• Assay-ready formatting are available in 96- or 384-well microplates with multiple concentration and volume options
• Rigorous drug-likeness and liability filtering to ensure high-quality screening pools
• ≥ 90% purity guaranteed, confirmed by LC–MS and/or NMR analysis
• Reliable hit re-supply and scalable synthesis to support hit validation and optimization
• Compound library design and combinatorial synthesis are available based on identified hits

Formatting

• 384-well PP-masterblocks, Greiner bio-one ref: 781280, V-bottom microtiter plate
• 96-well PP-masterblocks, Greiner bio-one ref: 780215, U-bottom 1.0 ml microplate capped with capmats, Greiner bio-one ref.# 381070
• 96-well plates, Matrix cat.# 4247, racked round-bottom tubes, 1.4 ml capped tubes with cap-strips cat.#4413 or cap-mats cat.# 4430

Pre-plated 3D-shaped Fragment Set

A collection of 4,724 structurally diverse, non-flat fragments enriched in sp³-character and three-dimensional scaffolds, including rod-like, disk-like, and spherical shapes. Designed to expand chemical space exploration beyond planar scaffolds and support fragment-based drug discovery against challenging targets.

For a detailed description and available formatting options, please refer to the full 3D-shaped Fragment Library.

 Download the full list of compounds (SD File) here.

Pre-plated Covalent Fragment Screening Set

This screening set comprises 5,704 covalent fragment-like inhibitors featuring a diverse range of covalent warheads, designed to support efficient covalent fragment screening. The library may be purchased as a single comprehensive set or as four complementary, non-overlapping subsets (2,824, 1,600, 960, and 320 compounds), each selected to maintain optimal structural diversity and chemical coverage.

The Covalent Fragment Screening Sets are fully customizable and can be supplied in multiple concentrations and volumes (e.g., 100 or 50 mM; 100, 50, 20, or 10 µL) in 96- or 384-well assay-ready plates, ensuring compatibility with a wide range of screening workflows.

All compounds containing overly reactive or non-selective electrophilic or nucleophilic groups, as well as non-drug-like scaffolds, were excluded during library design to ensure high screening quality, reduce false positives and improve hit relevance.

Each compound is annotated within the provided SD files with detailed information on the covalent warhead type present in its structure. In addition, a dedicated file titled “Covalent Warhead Distribution” summarizes the number of compounds associated with each functional group and their combinations.

For a detailed description and additional formatting options, please refer to the full Covalent Fragment Library. You may also be interested in our related Covalent Inhibitor Screening Libraries.

 Download the full list of compounds (SD File) here.

Pre-plated Fluorine Fragment Cocktails

This collection comprises 1,700 fluorinated fragment-like compounds, each designed to produce a single, well-resolved ¹⁹F NMR signal in the majority of cases, optimized for ¹⁹F NMR ligand-based fragment screening. Fragments were carefully selected to ensure broad chemical space coverage, high structural diversity, and varied local fluorine environments, while maintaining strong suitability for FBDD. Solubility in both DMSO and phosphate-buffered saline (PBS) has been experimentally confirmed for all compounds.

The fragments are organized into 170 predefined fluorine fragment cocktails, with 10 compounds per cocktail, strategically pooled to maximize separation of ¹⁹F chemical shifts and enable clear, unambiguous interpretation of NMR screening data.

The screening set is fully compatible with standard fragment screening workflows and is supplied as assay-ready 96-well plates, with individual compounds plated at 100 mM in DMSO-d₆. The Screening Set may be purchased as it is, or fragments can be mixed into predefined cocktails in-house. Custom reformatting, including plate layout and compound positioning, is available upon request.

For a more detailed description, please refer to our Fluorine Fragment Cocktails page. Our Fluorine Fragment Library additionally features over 10,500 drug-like fluorinated fragments, all available from stock.

Pre-plated Fsp³-enriched Fragment Set

1,600 sp³-rich, non-flat fragment-like compounds with an Fsp³ cutoff ≥ 0.45, designed to enhance three-dimensionality and scaffold diversity in fragment-based drug discovery. The set covers a broad range of chemically diverse structures and fully complies with in-house medicinal chemistry guidelines and PAINS filtering to ensure high-quality, developable screening hits.

For a detailed description and additional formatting options, please refer to the full Fsp³-enriched Fragment Library.

 Download the full list of compounds (SD File) here.

Pre-plated High-solubility Fragment Diversity Sets

Screening sets of 1,280, 960 and320structurally diverse drug-like fragments, each with experimentally confirmed solubility at 200 mM in DMSO, designed for reliable and flexible fragment-based drug discovery (FBDD) screening. The fragments provide broad chemical diversity while maintaining high solubility to support robust assay performance.

These screening sets are fully customizable and can be supplied at multiple concentrations (200/150/100/50 mM) and solution volumes (100/50/20/10 µL), formatted in 96- or 384-well plates to match standard screening workflows.

The sets are complementary and non-overlapping with the Pre-plated High-solubility DMSO-d6 Fragment Diversity Sets up to 1,280 compounds dissolved in DMSO-d6), enabling expanded chemical space coverage across orthogonal screening formats.

For a detailed description and additional formatting options, please refer to the full Fragment Diversity Subsets with Experimental Solubility.

 Download the full list of compounds (SD File) here.

Pre-plated High-solubility DMSO-d6 Fragment Diversity Sets

Fragment diversity subsets of 1,280,960, and 320 structurally diverse drug-like fragments with experimentally confirmed solubility at 200 mM, plated in DMSO-d₆ and optimized for NMR-based fragment screening applications.

These assay-ready screening sets are fully customizable, available at concentrations of 200/150/100/50 mM and solution volumes of 100/50/20/10 µL, and formatted in 96- or 384-well plates to support a wide range of NMR-FBDD workflows.

The sets are complementary and non-overlapping with the Pre-plated High-solubility Fragment Diversity Sets prepared in non-deuterated DMSO, enabling seamless integration of orthogonal screening strategies.

For a detailed description and additional formatting options, please refer to the full Fragment Diversity Subsets with Experimental Solubility.

 Download the full list of compounds (SD File) here. 

Pre-plated High-solubility Fragment Set

6,542 drug-like compounds soluble in DMSO and phosphate-buffered saline at high concentrations, aimed for large-scale fragment library screening. All the compounds in this Screening Library possess a minimum experimentally confirmed solubility of 1 mM in PBS and 200 mM in DMSO, measured by the thermodynamic method using HPLC.

For a detailed description and other formatting options, please refer to the full Fragment Library with Experimental Solubility and its High Solubility Fragment Subset.

 Download the full list of compounds (SD File) here.