Explore small molecules, screening libraries, and tool compounds for discovery research. Browse by target, pathway, or ligand family to quickly find inhibitors, agonists, and chemical probes, with searchable structure/CAS data and supporting documents (SDS/COA where available).
Targets & Pathways
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Ready-to-screen compound libraries and focused sets for hit discovery. Browse libraries by target class, pathway, scaffold, or application, and review size, format, and compound information to build screening panels.Customize Your Screening Library to choose compounds, format, and volume, and we’ll prepare a ready-to-use set for you.Customize Your Screening Library
Ligand families
24,639Navigate small molecules by ligand family or scaffold to build focused sets and explore structure–activity relationships. This category groups related chemotypes, helping you select analogs, fragments, and tool molecules for discovery research.
ADC-focused building blocks and tools to support antibody–drug conjugate research. Explore payloads, linkers, conjugation reagents, and related small-molecule components (where available) for designing and evaluating ADC constructs.
PROTAC
2,815PROTAC and targeted protein degradation tools for discovery research. Browse degrader-related ligands, linkers, and building blocks (where available) to assemble or screen PROTAC designs, with clear identifiers for efficient selection.
By Signaling Pathways
102,615Explore pathway-focused tool compounds to study and modulate key signaling cascades. Browse small molecules grouped by signaling pathway to support mechanism studies, phenotypic assays, and target validation, with clear identifiers for fast searching.
By Target (DTO)
19,694Find bioactive small molecules organized by protein target (DTO). Quickly locate tool compounds for specific targets and compare identifiers such as structure, CAS, and synonyms—plus supporting documents —to build screening and validation sets.
By Disease (DOID)
8,779Shop small molecules and tool compounds organized by disease area (DOID). Discover chemical probes, libraries, and related products mapped to therapeutic areas to help assemble compound sets for screening, pathway exploration, and model studies.
Products
- Dicresulene Ammonium SaltCAS: 78480-14-5(free) Formula: C15H16O8S2·xNH3 Molecular Weight: 388.41(free)● In Stock — US warehouse, ships to EU* Item #: D659158View ProductPricing & Pack Sizes
Technical Identifiers
- TrkA-IN-3Formula: C24H17F3N4O3 Molecular Weight: 466.41◐ Made to order · 8–12 wks Item #: T659232View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- CN1C=CC(C2=CC(C(NC3=CC(C(O)=O)=CN=C3C4=CC=CC=C4)=O)=CC=C2C(F)(F)F)=N1
- Nrf2 activator-2CAS: 2770448-53-6 Formula: C20H17BrO3 Molecular Weight: 385.25● In Stock — US warehouse, ships to EU* Item #: N659226View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- 6-Bromo-8,8-dimethyl-3-phenyl-9,10-dihydropyrano[2,3-f]chromen-2(8H)-one
- Nucleoprotein (396-404) (TFA)Formula: C52H72F3N13O16 Molecular Weight: 1192.2◐ Made to order · 8–12 wks Item #: N659254View ProductPricing & Pack Sizes
Technical Identifiers
- Ac2-26 TFAFormula: C143H211F3N32O46S Molecular Weight: 3203.45◐ Made to order · 8–12 wks Item #: A659186View ProductPricing & Pack Sizes
Technical Identifiers
- AS-InclisiranFormula: C237H291F10N101O134P22S4 Molecular Weight: 7699.6◐ Made to order · 8–12 wks Item #: A659148View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- [AS-Inclisiran]
- GPR84 antagonist 1Formula: C26H22N4O2 Molecular Weight: 422.48◐ Made to order · 8–12 wks Item #: G659187View ProductPricing & Pack Sizes
Technical Identifiers
- Urotensin I TFAFormula: C212H341F3N62O69S2 Molecular Weight: 4983.48◐ Made to order · 8–12 wks Item #: U659146View ProductPricing & Pack Sizes
Technical Identifiers
- VU6019650Formula: C18H22FN3O3S2 Molecular Weight: 411.51◐ Made to order · 8–12 wks Item #: V659239View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- O=S(C1=CC2=C(OCC2)C=C1)(N(CC[C@@H]3CSC4=NC=CN4C)C[C@@H]3F)=O
- Aminobenzenesulfonic auristatin E TFAFormula: C39H65F3N6O10S Molecular Weight: 867.03◐ Made to order · 8–12 wks Item #: A659407View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
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- Lurbinectedin-d3Formula: C41H41D3N4O10S Molecular Weight: 787.89◐ Made to order · 8–12 wks Item #: L659394View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- show more
- GP(33-41) TFAFormula: C48H70F3N11O15S Molecular Weight: 1130.19◐ Made to order · 8–12 wks Item #: G659389View ProductPricing & Pack Sizes
Technical Identifiers
Fast Shipping Same-day shipping on in-stock items
Technical Details Quality & specification info on every product page
Pack Size Options Multiple packaging sizes with pricing access from listing
R&D Use Only Products supplied for research and development use
Frequently Asked Questions
What does the By Target/Pathway/Disease listing cover?
It groups compounds associated with targets in By Target/Pathway/Disease, organised so you can move from the pathway to an individual target and then to a specific chemotype. Each entry carries structure, CAS number, and reported activity.
How is By Target/Pathway/Disease organised?
By Target/Pathway/Disease is broken down into Compound Libraries, PROTACs, molecular glues and other degraders and Antibody-drug Conjugates(ADC). Compounds acting on more than one node appear under each relevant target.
How do I choose compounds for By Target/Pathway/Disease research?
For By Target/Pathway/Disease, pick a well-characterised reference compound for the node you want to perturb, and pair it with a structurally unrelated compound hitting the same target — that is the cleanest way to separate pathway effects from off-target ones. Check potency, selectivity, and cell permeability against your assay format. All products are supplied for professional research and development use only, and are not for use in humans, animals, diagnostics, or therapy.
How do I find a specific compound within By Target/Pathway/Disease?
Search By Target/Pathway/Disease by compound name, CAS number, or SMILES, or drill down through the target listing. Unlisted compounds and bulk quantities: [email protected]. We supply verified businesses, research institutions, universities, and government agencies.