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
- Brimonidine TartrateLiquid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. 10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: B580317View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 5-bromo-N-(4,5-dihydro-1H-imidazol-2-yl)quinoxalin-6-amine;(2R,3R)-2,3-dihydroxybutanedioic acid
- SMILES
- C1CN=C(N1)NC2=C(C3=NC=CN=C3C=C2)Br.C(C(C(=O)O)O)(C(=O)O)O
- InChIKey
- QZHBYNSSDLTCRG-LREBCSMRSA-N
- InChI
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- Synonyms
- Brimonidine tartarate | Lumify | 4S9CL2DY2H | BRIMONIDINE TARTRATE | Brominide tartrate | UK-14304-18 | Alphagan | Qo...
- Baloxavir, Polymerase acidic protein inhibitorCAS: 1985605-59-1 Formula: C24H19F2N3O4S Molecular Weight: 483.4910mM in DMSO◐ .Made to order · 8–12 wks Item #: B580307View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
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- SMILES
- C1COCC2N1C(=O)C3=C(C(=O)C=CN3N2C4C5=C(CSC6=CC=CC=C46)C(=C(C=C5)F)F)O
- InChIKey
- FIDLLEYNNRGVFR-CTNGQTDRSA-N
- InChI
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- Synonyms
- AC-31577 | (12aR)-12-[(11S)-7,8-Difluoro-6,11-dihydrodibenzo[b,E]thiepin-11-yl]-7-hydroxy-3,4,12,12a-tetrahydro-1H-[1...
- Busulfan, DNA inhibitorMoligand™ ? 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 — Germany Item #: B579871View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-methylsulfonyloxybutyl methanesulfonate
- SMILES
- CS(=O)(=O)OCCCCOS(=O)(=O)C
- InChIKey
- COVZYZSDYWQREU-UHFFFAOYSA-N
- InChI
- 1S/C6H14O6S2/c1-13(7,8)11-5-3-4-6-12-14(2,9)10/h3-6H2,1-2H3
- Synonyms
- DTXSID3020910 | 2041 C. B. | BUSULFAN [VANDF] | Mielosan | Tetramethylene {bis[methanesulfonate]} | TETRAMETHYLENE DI...
- H 9 dihydrochloride● In Stock — US warehouse, ships to EU* Item #: H597562View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-(2-aminoethyl)isoquinoline-5-sulfonamide;dihydrochloride
- SMILES
- C1=CC2=C(C=CN=C2)C(=C1)S(=O)(=O)NCCN.Cl.Cl
- InChIKey
- HBLCYSFLYMHCBM-UHFFFAOYSA-N
- InChI
- 1S/C11H13N3O2S.2ClH/c12-5-7-14-17(15,16)11-3-1-2-9-8-13-6-4-10(9)11;;/h1-4,6,8,14H,5,7,12H2;2*1H
- Synonyms
- N-(2-Aminoethyl)-5-isoquinolinesulfonamidedihydrochloride
- ClinofibrateCAS: 30299-08-2 Formula: C28H36O6 Molecular Weight: 468.582● In Stock — US warehouse, ships to EU* Item #: C129312View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-[4-[1-[4-(2-carboxybutan-2-yloxy)phenyl]cyclohexyl]phenoxy]-2-methylbutanoic acid
- SMILES
- CCC(C)(C(=O)O)OC1=CC=C(C=C1)C2(CCCCC2)C3=CC=C(C=C3)OC(C)(CC)C(=O)O
- InChIKey
- BMOVQUBVGICXQN-UHFFFAOYSA-N
- InChI
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- Synonyms
- S-8527 | C3100 | NCGC00167453-01 | 2,2'-Cyclohexane-1,1-diylbis(p-phenyleneoxy)bis(2-methylbutyric acid) | s2664 | SW...
- Abaloparatide Acetate10mM in DMSO◐ .Made to order · 8–12 wks Item #: A580290View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
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- SMILES
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- InChIKey
- BVISQZFBLRSESR-UHFFFAOYSA-N
- InChI
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- Synonyms
- Abaloparatide acetate | Abaloparatide
- Cyclopentolate Hydrochloride● In Stock — US warehouse, ships to EU* Item #: C134695View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-(dimethylamino)ethyl 2-(1-hydroxycyclopentyl)-2-phenylacetate;hydrochloride
- SMILES
- CN(C)CCOC(=O)C(C1=CC=CC=C1)C2(CCCC2)O.Cl
- InChIKey
- RHKZVMUBMXGOLL-UHFFFAOYSA-N
- InChI
- 1S/C17H25NO3.ClH/c1-18(2)12-13-21-16(19)15(14-8-4-3-5-9-14)17(20)10-6-7-11-17;/h3-5,8-9,15,20H,6-7,10-13H2,1-2H3;1H
- Synonyms
- 736I6971TE | Ciclolux | CYCLOPENTOLATE HYDROCHLORIDE [MART.] | Q27266147 | CYCLOPENTOLATE HYDROCHLORIDE [USP-RS] | NC...
- Aceclidine Hydrochloride10mM in DMSO◐ .Made to order · 8–12 wks Item #: A580291View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-azabicyclo[2.2.2]octan-3-yl acetate;hydrochloride
- SMILES
- CC(=O)OC1CN2CCC1CC2.Cl
- InChIKey
- LWWSARSTZGNKGV-UHFFFAOYSA-N
- InChI
- 1S/C9H15NO2.ClH/c1-7(11)12-9-6-10-4-2-8(9)3-5-10;/h8-9H,2-6H2,1H3;1H
- Synonyms
- Aceclidine hydrochloride|6109-70-2|Aceclidine (hydrochloride)|Quinuclidin-3-yl acetate hydrochloride|Aceclidine HCl|3...
- CNQX disodium saltCAS: 479347-85-8 Formula: C9H2N4Na2O4 Molecular Weight: 276.1210mM in H2O◐ .Made to order · 8–12 wks Item #: C275408View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- disodium;6-cyano-7-nitroquinoxaline-2,3-diolate
- SMILES
- C1=C(C(=CC2=C1N=C(C(=N2)[O-])[O-])[N+](=O)[O-])C#N.[Na+].[Na+]
- InChIKey
- YCXDDPGRZKUGDG-UHFFFAOYSA-L
- InChI
- 1S/C9H4N4O4.2Na/c10-3-4-1-5-6(2-7(4)13(16)17)12-9(15)8(14)11-5;;/h1-2H,(H,11,14)(H,12,15);;/q;2*+1/p-2
- Synonyms
- 6-Cyano-7-nitroquinoxaline-2,3-dione disodium salt hydrate | DTXSID201019070 | F81775 | HY-15066A | MB01477 | disodiu...
- CRT0066101◐ .Made to order · 8–12 wks Item #: C276163View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- 2-[4-[[(2R)-2-Aminobutyl]amino]pyrimidin-2-yl]-4-(1-methyl-1H-pyrazol-4-yl)phenoldihydrochloride
- Cefozopran hydrochlorideCAS: 113981-44-5 Formula: C19H18ClN9O5S2 Molecular Weight: 552● In Stock — US warehouse, ships to EU* Item #: C413303View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
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- SMILES
- CON=C(C1=NSC(=N1)N)C(=O)NC2C3N(C2=O)C(=C(CS3)C[N+]4=C5C=CC=NN5C=C4)C(=O)[O-].Cl
- InChIKey
- NTJHUKMPVIFDNY-XFDPNJHTSA-N
- InChI
- show more
- Synonyms
- SCHEMBL9286286 | AKOS037648568 | Cefozopran (hydrochloride) | (-)-1-(((6R,7R)-7-(2-(5-AMINO-1,2,4-THIADIAZOL-3-YL)GLY...
- 2-(4-acetylanilino)-N-benzhydrylacetamide● In Stock — US warehouse, ships to EU* Item #: C416687View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-(4-acetylanilino)-N-benzhydrylacetamide
- SMILES
- CC(=O)C1=CC=C(C=C1)NCC(=O)NC(C2=CC=CC=C2)C3=CC=CC=C3
- InChIKey
- NAQYEBJEFKXTHR-UHFFFAOYSA-N
- InChI
- 1S/C23H22N2O2/c1-17(26)18-12-14-21(15-13-18)24-16-22(27)25-23(19-8-4-2-5-9-19)20-10-6-3-7-11-20/h2-15,23-24H,16H2,1H3,(H,25,27)
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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.