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
- GSK2945 hydrochlorideFormula: C20H19Cl3N2O2S Molecular Weight: 457.8◐ Made to order · 8–12 wks Item #: G659004View ProductPricing & Pack Sizes
Technical Identifiers
- α-Synuclein (61-75) (TFA)Formula: C62H104F3N17O25 Molecular Weight: 1544.58◐ Made to order · 8–12 wks Item #: S658997View ProductPricing & Pack Sizes
Technical Identifiers
- Brain Natriuretic Peptide (1-32), rat acetateFormula: C148H243N47O46S3 Molecular Weight: 3512.99◐ Made to order · 8–12 wks Item #: B659036View ProductPricing & Pack Sizes
Technical Identifiers
- Retatrutide sodium saltCAS: 2381089-83-2(free) Formula: C221H342N46O68(free) Molecular Weight: 4731.33(free)● In Stock — US warehouse, ships to EU* Item #: R659019View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Retatrutide sodium salt(2381089-83-2 free base)|LY3437943 sodium salt
- Pseudouridine 5'-triphosphate trisodiumFormula: C9H12N2Na3O15P3 Molecular Weight: 550.09◐ Made to order · 8–12 wks Item #: P659017View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- O=P(O)(O[Na])OP(OP(OC[C@H]1O[C@@H](C(C(N2)=O)=CNC2=O)[C@H](O)[C@@H]1O)(O[Na])=O)(O[Na])=O
- CH-0793076 TFAFormula: C28H27F3N4O6 Molecular Weight: 572.53◐ Made to order · 8–12 wks Item #: C659020View ProductPricing & Pack Sizes
Technical Identifiers
- EGFR-IN-1 TFAFormula: C30H31F3N6O6 Molecular Weight: 628.6◐ Made to order · 8–12 wks Item #: E659035View ProductPricing & Pack Sizes
Technical Identifiers
- Dynorphin A (1-10) (TFA)Formula: C59H92F3N19O14 Molecular Weight: 1348.48◐ Made to order · 8–12 wks Item #: D659170View ProductPricing & Pack Sizes
Technical Identifiers
- Apamin TFAFormula: C81H132F3N31O26S4 Molecular Weight: 2141.36◐ Made to order · 8–12 wks Item #: A659185View ProductPricing & Pack Sizes
Technical Identifiers
- UNC7467CAS: 2922283-43-8 Formula: C20H13NO3 Molecular Weight: 315.32● In Stock — US warehouse, ships to EU* Item #: U659176View ProductPricing & Pack Sizes
Technical Identifiers
- SiRNA Negative Control◐ Made to order · 8–12 wks Item #: S659212View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- [RNA, (UUCUCCGAACGUGUCACGUUU), complex with RNA (UUAAGAGGCUUGCACAGUGCA) (1:1)]
- hsa-miR-145-5p mimicMolecular Weight: 14669.8◐ Made to order · 8–12 wks Item #: H659167View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- [hsa-miR-145-5p mimic]
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.