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
24,642Navigate 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
102,635Explore 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)
19,700Find 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)
8,782Shop 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
- DMH-1● In Stock — US warehouse, ships to EU* Item #: D275100View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-[6-(4-propan-2-yloxyphenyl)pyrazolo[1,5-a]pyrimidin-3-yl]quinoline
- SMILES
- CC(C)OC1=CC=C(C=C1)C2=CN3C(=C(C=N3)C4=CC=NC5=CC=CC=C45)N=C2
- InChIKey
- JMIFGARJSWXZSH-UHFFFAOYSA-N
- InChI
- 1S/C24H20N4O/c1-16(2)29-19-9-7-17(8-10-19)18-13-26-24-22(14-27-28(24)15-18)20-11-12-25-23-6-4-3-5-21(20)23/h3-16H,1-2H3
- Synonyms
- NCGC00371039-08 | 4-(6-{4-[(propan-2-yl)oxy]phenyl}pyrazolo[1,5-a]pyrimidin-3-yl)quinoline | AKOS024457987 | 4-[6-(4-...
- EstroneSolid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥98%● In Stock — US warehouse, ships to EU* Item #: E105515View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (8R,9S,13S,14S)-3-hydroxy-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-one
- SMILES
- CC12CCC3C(C1CCC2=O)CCC4=C3C=CC(=C4)O
- InChIKey
- DNXHEGUUPJUMQT-CBZIJGRNSA-N
- InChI
- 1S/C18H22O2/c1-18-9-8-14-13-5-3-12(19)10-11(13)2-4-15(14)16(18)6-7-17(18)20/h3,5,10,14-16,19H,2,4,6-9H2,1H3/t14-,15-,16+,18+/m1/s1
- Synonyms
- 2DI9HA706A | Cristallovar | delta-1,3,5-estratrien-3-beta-ol-17-one | delta-1,3,5-Estratrien-3beta-ol-17-one | ESTRON...
- Squalene 2,3:22,23-DioxideLiquid ≥98%● In Stock — US warehouse, ships to EU* Item #: S334425View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 3-[(3E,7E,11E,15E)-18-(3,3-dimethyloxiran-2-yl)-3,7,12,16-tetramethyloctadeca-3,7,11,15-tetraenyl]-2,2-dimethyloxirane
- SMILES
- CC(=CCCC=C(C)CCC=C(C)CCC1C(O1)(C)C)CCC=C(C)CCC2C(O2)(C)C
- InChIKey
- KABSNIWLJXCBGG-TXLDAEQNSA-N
- InChI
- show more
- Synonyms
- 2,3,22,23-Dioxidosqualene | BDBM50280128 | 3-[18-(3,3-dimethyl-2-oxiranyl)-3,7,12,16-tetramethyl-(3E,7E,11E,15E)-3,7,...
- Ferrous BisglycinateCAS: 20150-34-9 EC Number: 606-444-7 PubChem CID: 9837124 Formula: C4H8FeN2O4 Molecular Weight: 203.96Solid Iron content: 20%● In Stock — Germany Item #: F302712View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-aminoacetate;iron(2+)
- SMILES
- C(C(=O)[O-])N.C(C(=O)[O-])N.[Fe+2]
- InChIKey
- GIPOFCXYHMWROH-UHFFFAOYSA-L
- InChI
- 1S/2C2H5NO2.Fe/c2*3-1-2(4)5;/h2*1,3H2,(H,4,5);/q;;+2/p-2
- Synonyms
- Iron glycinate | BIS(GLYCINATO-.KAPPA.N,.KAPPA.O)IRON | Bisglycine iron(II) salt | lambda2-iron(2+) ion bis(2-aminoac...
- D-(+)-Galactosamine hydrochlorideCAS: 1772-03-8 Formula: C6H13NO5 · HCl Molecular Weight: 215.63for Cell culture ? Cell-culture grade — low endotoxin and contaminants to support viable cell growth. Use in mammalian/other cell culture media and supplements. ≥99%● In Stock — US warehouse, ships to EU* Item #: G115554View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- 1886979-58-3 | (3R,4R,5R,6R)-3-amino-6-(hydroxymethyl)tetrahydro-2H-pyran-2,4,5-triol hydrochloride | NCGC00255106-01...
- Quinine sulfate dihydrate, Ferriprotoporphyrin IX inhibitorCAS: 6119-70-6 EC Number: 639-128-2 PubChem CID: 16211610 Formula: C40H48N4O4.H2SO4.2H2O Molecular Weight: 782.95Solid ≥98%● In Stock — US warehouse, ships to EU* Item #: Q110175View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (R)-[(2S,4S,5R)-5-ethenyl-1-azabicyclo[2.2.2]octan-2-yl]-(6-methoxyquinolin-4-yl)methanol;sulfuric acid;dihydrate
- SMILES
- COC1=CC2=C(C=CN=C2C=C1)C(C3CC4CCN3CC4C=C)O.COC1=CC2=C(C=CN=C2C=C1)C(C3CC4CCN3CC4C=C)O.O.O.OS(=O)(=O)O
- InChIKey
- ZHNFLHYOFXQIOW-LPYZJUEESA-N
- InChI
- show more
- Synonyms
- CINCHONAN-9-OL, 6'-METHOXY-, (8.ALPHA.,9R)-, SULFATE, HYDRATE (2:1:2) | QUININE SULFATE HYDRATE [JAN] | 1-propyl-3-(3...
- Ethacridine lactate monohydrate● In Stock — US warehouse, ships to EU* Item #: D129570View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 7-ethoxyacridine-3,9-diamine;2-hydroxypropanoic acid;hydrate
- SMILES
- CCOC1=CC2=C(C3=C(C=C(C=C3)N)N=C2C=C1)N.CC(C(=O)O)O.O
- InChIKey
- NYEPHMYJRNWPLA-UHFFFAOYSA-N
- InChI
- 1S/C15H15N3O.C3H6O3.H2O/c1-2-19-10-4-6-13-12(8-10)15(17)11-5-3-9(16)7-14(11)18-13;1-2(4)3(5)6;/h3-8H,2,16H2,1H3,(H2,17,18);2,4H,1H3,(H,5,6);1H2
- Synonyms
- Acrinol Monohydrate | 6,9-Diamino-2-ethoxyacridine lactate monohydrate
- IC87201Solid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥95%◐ .Made to order · 8–12 wks Item #: I286663View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-[(2H-benzotriazol-5-ylamino)methyl]-4,6-dichlorophenol
- SMILES
- C1=CC2=NNN=C2C=C1NCC3=C(C(=CC(=C3)Cl)Cl)O
- InChIKey
- QEHVTUCLCBXQIC-UHFFFAOYSA-N
- InChI
- 1S/C13H10Cl2N4O/c14-8-3-7(13(20)10(15)4-8)6-16-9-1-2-11-12(5-9)18-19-17-11/h1-5,16,20H,6H2,(H,17,18,19)
- Synonyms
- 2-[(1H-Benzotriazol-6-ylamino)methyl]-4,6-dichlorophenol | 2-(1H-Benzotriazol-6-ylamino)methyl-4,6-dichlorophenol,Phe...
- Z-Ala-Trp-OH● In Stock — US warehouse, ships to EU* Item #: Z346045View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2S)-3-(1H-indol-3-yl)-2-[[(2S)-2-(phenylmethoxycarbonylamino)propanoyl]amino]propanoic acid
- SMILES
- CC(C(=O)NC(CC1=CNC2=CC=CC=C21)C(=O)O)NC(=O)OCC3=CC=CC=C3
- InChIKey
- OEANOUHCLXZBNG-LIRRHRJNSA-N
- InChI
- show more
- Synonyms
- AS-19611 | AKOS024432241 | SMR000841576 | (S)-2-((S)-2-(benzyloxycarbonylamino)propanamido)-3-(1H-indol-3-yl)propanoi...
- StigmasterolSolid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥90%● In Stock — US warehouse, ships to EU* Item #: S111185View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CCC(C=CC(C)C1CCC2C1(CCC3C2CC=C4C3(CCC(C4)O)C)C)C(C)C
- InChIKey
- HCXVJBMSMIARIN-PHZDYDNGSA-N
- InChI
- show more
- Synonyms
- 3.BETA.-HYDROXY-24-ETHYL-.DELTA.(SUP 5,22)-CHOLESTADIENE | 5,22-Cholestadien-24-ethyl-3beta-ol | AS-15473 | (3S,8S,9S...
- Stoddard solventNone● In Stock — Germany Item #: S304692View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- acetic acid;6-bromohexan-1-ol
- SMILES
- CC(=O)O.C(CCCBr)CCO
- InChIKey
- ORSNIUUONGZHEH-UHFFFAOYSA-N
- InChI
- 1S/C6H13BrO.C2H4O2/c7-5-3-1-2-4-6-8;1-2(3)4/h8H,1-6H2;1H3,(H,3,4)
- Synonyms
- 1-Hexanol, 6-bromo-, acetate|8052-41-3|6-BROMO-1-HEXANOL ACETATE|Named reagents andsolutions, Stoddard|AKOS028110073|...
- Ac-Phe-Tyr-OHCAS: 2365-53-9 Formula: C20H22N2O5 Molecular Weight: 370.4● In Stock — US warehouse, ships to EU* Item #: A354597View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2S)-2-[[(2S)-2-acetamido-3-phenylpropanoyl]amino]-3-(4-hydroxyphenyl)propanoic acid
- SMILES
- CC(=O)NC(CC1=CC=CC=C1)C(=O)NC(CC2=CC=C(C=C2)O)C(=O)O
- InChIKey
- AGHAPAFOMGHXMT-ROUUACIJSA-N
- InChI
- show more
- Synonyms
- DTXSID10425861 | N-Acetyl-L-Phe-Tyr | N-acetyl-l-phenylalanyl-l-tyrosine | BDBM36213 | Acetyl-L-phenylalanyl-L-tyrosi...
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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.