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
- Angiotensin III, human, mouse TFAFormula: C48H67F3N12O11 Molecular Weight: 1045.11◐ Made to order · 8–12 wks Item #: A659069View ProductPricing & Pack Sizes
Technical Identifiers
- INCB3344 R-isomerFormula: C29H34F3N3O6 Molecular Weight: 577.59◐ Made to order · 8–12 wks Item #: I659067View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- CCO[C@H]1CN([C@]2([H])CC[C@](C3=CC(OCO4)=C4C=C3)(O)CC2)C[C@@H]1NC(CNC(C5=CC(C(F)(F)F)=CC=C5)=O)=O
- hsa-miR-26b-5p mimicMolecular Weight: 13364◐ Made to order · 8–12 wks Item #: H659070View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- [hsa-miR-26b-5p mimic]
- (S)-VQW-765Formula: C19H22N2O Molecular Weight: 294.39◐ Made to order · 8–12 wks Item #: S659071View ProductPricing & Pack Sizes
Technical Identifiers
- S961 TFAFormula: C211H297N55O71S2.C2HF3O2 Molecular Weight: 4918.15◐ Made to order · 8–12 wks Item #: S659083View ProductPricing & Pack Sizes
Technical Identifiers
- HKSOX-1m (5/6-mixture) (hydrobromide)Formula: C49H37Br2F10N2O10PS2 Molecular Weight: 1258.72◐ Made to order · 8–12 wks Item #: H659079View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- show more
- hsa-miR-143-3p mimicMolecular Weight: 13307◐ Made to order · 8–12 wks Item #: H659086View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- [hsa-miR-143-3p mimic]
- MYF-03-176Formula: C19H18F4N4O2 Molecular Weight: 410.37◐ Made to order · 8–12 wks Item #: M659087View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- FC(F)(F)C1=CC=C(CO[C@@H]2CN(C(C(F)=C)=O)C[C@H]2NC3=NC=CC=N3)C=C1
- AMARA peptide TFACAS: 163560-19-8(free) Formula: C64H116F3N27O18S Molecular Weight: 1640.84Solid ≥98%● In Stock — US warehouse, ships to EU* Item #: A659085View ProductPricing & Pack Sizes
Technical Identifiers
- Rivanicline hemioxalateFormula: C11H15N2O2 Molecular Weight: 207.23◐ Made to order · 8–12 wks Item #: R659103View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- CNCC/C=C/C1=CC=CN=C1.OC(C(O)=O)=O.[0.5]
- NV-5138 hydrochlorideFormula: C7H14ClF2NO2 Molecular Weight: 217.64◐ Made to order · 8–12 wks Item #: N659115View ProductPricing & Pack Sizes
Technical Identifiers
- Angiopep-2 hydrochlorideFormula: C104H150ClN29O31 Molecular Weight: 2337.93Solid ≥98%◐ Made to order · 8–12 wks Item #: A659118View 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.