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
- 3′,4′-DifluoropropiophenoneLiquid 10mM in DMSO◐ Made to order · 8–12 wks Item #: D660885View ProductPricing & Pack Sizes
Technical Identifiers
- 3-tert-Butyl-4-hydroxyanisoleLiquid 10mM in DMSO◐ Made to order · 8–12 wks Item #: T660883View ProductPricing & Pack Sizes
Technical Identifiers
- 4-tert-butyl-1,3-thiazol-2-amineCAS: 74370-93-7 EC Number: 678-940-1 PubChem CID: 2734202 Formula: C7H12N2S Molecular Weight: 156.25Liquid 10mM in DMSO◐ Made to order · 8–12 wks Item #: T661053View ProductPricing & Pack Sizes
Technical Identifiers
- α-Isopropylphenylacetic acidLiquid 10mM in DMSO◐ Made to order · 8–12 wks Item #: I661307View ProductPricing & Pack Sizes
Technical Identifiers
- TrkA-IN-4Formula: C27H21F3N4O5 Molecular Weight: 538.47◐ Made to order · 8–12 wks Item #: T658654View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- CC(OCOC(C1=CN=C(C(NC(C2=CC=C(C(C3=NN(C=C3)C)=C2)C(F)(F)F)=O)=C1)C4=CC=CC=C4)=O)=O
- XIAP degrader-1Formula: C34H45N5O4 Molecular Weight: 587.75◐ Made to order · 8–12 wks Item #: X658648View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- CN[C@H](C(N[C@@H]1C(N(C2=C(N([C@H]1C)C(CCCCCCCN)=O)C=CC=C2)CC3=C(C=CC=C4)C4=CC=C3OC)=O)=O)C
- PROTAC Bcl-xL ligand-1Formula: C32H29IN4O4S2 Molecular Weight: 724.63◐ Made to order · 8–12 wks Item #: P658661View ProductPricing & Pack Sizes
Technical Identifiers
- Midostaurin-d5Formula: C35H25D5N4O4 Molecular Weight: 575.67◐ Made to order · 8–12 wks Item #: M658660View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- O=C(C1=C([2H])C([2H])=C([2H])C([2H])=C1[2H])N(C)[C@H]2[C@@H](OC)[C@@]3(C)N(C4=C5C=CC=C4)C6=C5C7=C(C(NC7)=O)C8=C6N(C9=CC=CC=C98)[C@@](O3)([H])C2
- UNC4976 TFAFormula: C49H71F3N6O10 Molecular Weight: 961.12◐ Made to order · 8–12 wks Item #: U658655View ProductPricing & Pack Sizes
Technical Identifiers
- Biotin-16-dUTP trisodiumFormula: C32H49N7Na3O18P3S Molecular Weight: 1013.72◐ Made to order · 8–12 wks Item #: B658667View ProductPricing & Pack Sizes
Technical Identifiers
- PLX5622 hemifumarateFormula: C23H21F2N5O3 Molecular Weight: 453.45◐ Made to order · 8–12 wks Item #: P658668View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- COC1=NC=C(F)C=C1CNC2=NC(F)=C(CC3=CNC4=NC=C(C)C=C43)C=C2.O=C(O)/C=C/C(O)=O.[1/2]
- Exendin derivative 1Formula: C184H281N49O61S Molecular Weight: 4187.56◐ Made to order · 8–12 wks Item #: E658666View 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.