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).
By Target / Pathway / Disease
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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
24,653Navigate 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
2,814PROTAC 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
102,665Explore 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)
19,717Find 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 (where available)—to build screening and validation sets.
By Disease (DOID)
8,793Shop 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.
Popular Products
- Perospirone hydrochloride● In Stock — US warehouse, ships to EU* Item #: P337450View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3aS,7aR)-2-[4-[4-(1,2-benzothiazol-3-yl)piperazin-1-yl]butyl]-3a,4,5,6,7,7a-hexahydroisoindole-1,3-dione;hydrochloride
- SMILES
- C1CCC2C(C1)C(=O)N(C2=O)CCCCN3CCN(CC3)C4=NSC5=CC=CC=C54.Cl
- InChIKey
- HIZFAPMOZFYELI-GNXQHMNLSA-N
- InChI
- show more
- Synonyms
- NC00112 | PEROSPIRONE HYDROCHLORIDE [MI] | 129273-38-7 (HCl) | 2-Methylbut-2-enoate | (3aR,7aS)-2-{4-[4-(1,2-Benzothi...
- trans-3′-HydroxycotinineSolid ≥95%◐ .Made to order · 8–12 wks Item #: T331682View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3R,5S)-3-hydroxy-1-methyl-5-pyridin-3-ylpyrrolidin-2-one
- SMILES
- CN1[C@@H](C[C@H](C1=O)O)C2=CN=CC=C2
- InChIKey
- XOKCJXZZNAUIQN-DTWKUNHWSA-N
- InChI
- 1S/C10H12N2O2/c1-12-8(5-9(13)10(12)14)7-3-2-4-11-6-7/h2-4,6,8-9,13H,5H2,1H3/t8-,9+/m0/s1
- Synonyms
- trans-3-Hydroxycotinine | NSC14759 | (3R,5S)-3-hydroxy-1-methyl-5-(pyridin-3-yl)pyrrolidin-2-one | W-202428 | AKOS027...
- DolomiteCAS: 12001-27-3 Formula: CaMg(CO3)2 Molecular Weight: 184.4naturally occurring mineral, grains, approximately 0.06-0.19in● In Stock — Germany Item #: D340770View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- C(=O)([O-])[O-].C(=O)([O-])[O-].[Mg+2].[Ca+2]
- Synonyms
- EINECS 230-274-9 | Q26840885 | STRADOLOMIT A 20 | Dolomite (CaMg(CO3)2) | Microdol 1 | DOLOMITE | Calcidol | Gurhofit...
- trans-Ned 19CAS: 1354235-96-3 Formula: C30H31FN4O3 Molecular Weight: 514.59Solid ≥98%(HPLC)● In Stock — US warehouse, ships to EU* Item #: T286675View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (1R,3S)-1-[3-[[4-(2-fluorophenyl)piperazin-1-yl]methyl]-4-methoxyphenyl]-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic acid
- SMILES
- COC1=C(C=C(C=C1)C2C3=C(CC(N2)C(=O)O)C4=CC=CC=C4N3)CN5CCN(CC5)C6=CC=CC=C6F
- InChIKey
- FUHCEERDBRGPQZ-LBNVMWSVSA-N
- InChI
- show more
- Synonyms
- trans-Ned-19 | 1354235-96-3 | Nicotinic acid adenine dinucleotide phosphate antagonist | SCHEMBL20162481 | HY-103316 ...
- OridoninSolid Analytical standard ? Analytical standard — certified-purity material for quantitative calibration. Use to prepare calibration standards and validate analytical methods. ≥98%● In Stock — US warehouse, ships to EU* Item #: O111381View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (1S,2S,5S,8R,9S,10S,11R,15S,18R)-9,10,15,18-tetrahydroxy-12,12-dimethyl-6-methylidene-17-oxapentacyclo[7.6.2.15,8.01,11.02,8]octadecan-7-one
- SMILES
- CC1(CCC(C23C1C(C(C45C2CCC(C4O)C(=C)C5=O)(OC3)O)O)O)C
- InChIKey
- SDHTXBWLVGWJFT-XKCURVIJSA-N
- InChI
- show more
- Synonyms
- ORIDONIN [INCI] | NSC-250682; Isodonol | Rubescenin | DTXSID201021760 | KAUR-16-EN-15-ONE, 7,20-EPOXY-1,6,7,14-TETRAH...
- Boc-N-methyl-gamma-aminobutyric acidSolid ≥98%● In Stock — US warehouse, ships to EU* Item #: B355154View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-[methyl-[(2-methylpropan-2-yl)oxycarbonyl]amino]butanoic acid
- SMILES
- CC(C)(C)OC(=O)N(C)CCCC(=O)O
- InChIKey
- PXAKQDWAISFHCM-UHFFFAOYSA-N
- InChI
- 1S/C10H19NO4/c1-10(2,3)15-9(14)11(4)7-5-6-8(12)13/h5-7H2,1-4H3,(H,12,13)
- Synonyms
- AKOS008126011 | Boc-N-methyl-gamma-aminobutyric acid | 4-[(tert-butoxycarbonyl)(methyl)amino]butanoic acid | 4-(N-BOC...
- AngelicinSolid Analytical standard ? Analytical standard — certified-purity material for quantitative calibration. Use to prepare calibration standards and validate analytical methods. Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools.● In Stock — US warehouse, ships to EU* Item #: A115192View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- furo[2,3-h]chromen-2-one
- SMILES
- C1=CC2=C(C=CO2)C3=C1C=CC(=O)O3
- InChIKey
- XDROKJSWHURZGO-UHFFFAOYSA-N
- InChI
- 1S/C11H6O3/c12-10-4-2-7-1-3-9-8(5-6-13-9)11(7)14-10/h1-6H
- Synonyms
- 4-Hydroxy-5-benzofuranacrylic acid gamma-lactone | A829042 | 2-Propenoic acid, 3-(4-hydroxy-5-benzofuranyl)-, delta-l...
- Parathion-methyl solutionAnalytical standard ? Analytical standard — certified-purity material for quantitative calibration. Use to prepare calibration standards and validate analytical methods. 1.00mg/ml in methanol◐ .Made to order · 8–12 wks Item #: P109838View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Methyl parathion; O,O-Dimethyl O-(4-nitrophenyl) phosphorothioate;
- Abamectin solutionCAS: 71751-41-2 EC Number: 615-339-5 PubChem CID: 254761708 Formula: C48H72O14 Molecular Weight: 873.1Analytical standard ? Analytical standard — certified-purity material for quantitative calibration. Use to prepare calibration standards and validate analytical methods. 100μg/ml in methanol● In Stock — US warehouse, ships to EU* Item #: A109742View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Avermectin B1
- Amyloid β Peptide (22-35)◐ .Made to order · 8–12 wks Item #: A275987View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- show more
- InChIKey
- KUDAPIFTNDCCFG-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- A-Protein (22-35) | Amyloid | DTXSID40394091 | AC1MTOKN | beta-Amyloid (22-35) | beta-Amyloid 22-35 | PD099331 | Amy...
- (+)-Anabasine hydrochlorideCAS: 53912-89-3 Formula: C10H15ClN2 Molecular Weight: 198.69● In Stock — US warehouse, ships to EU* Item #: A124543View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 3-[(2S)-piperidin-2-yl]pyridine;hydrochloride
- SMILES
- C1CCNC(C1)C2=CN=CC=C2.Cl
- InChIKey
- VTMZQNZVYCJLGG-PPHPATTJSA-N
- InChI
- 1S/C10H14N2.ClH/c1-2-7-12-10(5-1)9-4-3-6-11-8-9;/h3-4,6,8,10,12H,1-2,5,7H2;1H/t10-;/m0./s1
- Synonyms
- anabazine hydrochloride | EN300-7466548 | Anabasin chloride | Gamibasin | (S)-3-(2-Piperidinyl)pyridine hydrochloride...
- AF12198（TFA）CAS: 185413-30-3(free base) Formula: C96H123N19O22(free base) Molecular Weight: 1895.12(free base)● In Stock — US warehouse, ships to EU* Item #: A275277View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- AF 12198
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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.