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
- D-Alanine Isopropyl Ester HydrochlorideSolid ≥98%● In Stock — US warehouse, ships to EU* Item #: D303645View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- propan-2-yl (2R)-2-aminopropanoate;hydrochloride
- SMILES
- CC(C)OC(=O)C(C)N.Cl
- InChIKey
- YAQKNCSWDMGPOY-NUBCRITNSA-N
- InChI
- 1S/C6H13NO2.ClH/c1-4(2)9-6(8)5(3)7;/h4-5H,7H2,1-3H3;1H/t5-;/m1./s1
- Synonyms
- AS-17655 | EN300-109068 | L-Alanine isopropyl ester HCl | H-D-Ala-OiPr HCl | MFCD17976853 | Isopropyl D-alaninate hyd...
- 7-Keto-dehydroepiandrosteroneSolid ≥98%● In Stock — US warehouse, ships to EU* Item #: K304013View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3S,8R,9S,10R,13S,14S)-3-hydroxy-10,13-dimethyl-2,3,4,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthrene-7,17-dione
- SMILES
- CC12CCC3C(C1CCC2=O)C(=O)C=C4C3(CCC(C4)O)C
- InChIKey
- KPRGOTLNGIBVFL-GINZOMEDSA-N
- InChI
- 1S/C19H26O3/c1-18-7-5-12(20)9-11(18)10-15(21)17-13-3-4-16(22)19(13,2)8-6-14(17)18/h10,12-14,17,20H,3-9H2,1-2H3/t12-,13-,14-,17-,18-,19-/m0/s1
- Synonyms
- 7-Keto-dehydroepiandrosterone|566-19-8|7-Keto-DHEA|7-Oxodehydroepiandrosterone|7-Ketodehydroepiandrosterone|7-Oxo-DHE...
- 7-Fluoro-2H-1,4-benzoxazin-3(4H)-one● In Stock — US warehouse, ships to EU* Item #: F337070View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 7-fluoro-4H-1,4-benzoxazin-3-one
- SMILES
- C1C(=O)NC2=C(O1)C=C(C=C2)F
- InChIKey
- TXRXHEOGQVPEBT-UHFFFAOYSA-N
- InChI
- 1S/C8H6FNO2/c9-5-1-2-6-7(3-5)12-4-8(11)10-6/h1-3H,4H2,(H,10,11)
- Synonyms
- AD-0189 | 7-fluoro-4H-1,4-benzoxazin-3-one | 2H-1,4-benzoxazin-3(4H)-one, 7-fluoro- | 7-fluoro-(2h)-1,4-benzoxazin-3(...
- 7-Fluoro-4-hydroxyquinoline-3-carboxylic acidCAS: 63463-20-7 Formula: C10H6FNO3 Molecular Weight: 207.16● In Stock — US warehouse, ships to EU* Item #: F337568View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 7-fluoro-4-oxo-1H-quinoline-3-carboxylic acid
- SMILES
- C1=CC2=C(C=C1F)NC=C(C2=O)C(=O)O
- InChIKey
- FWIYSXZSVUTDIK-UHFFFAOYSA-N
- InChI
- 1S/C10H6FNO3/c11-5-1-2-6-8(3-5)12-4-7(9(6)13)10(14)15/h1-4H,(H,12,13)(H,14,15)
- Synonyms
- DTXSID80316813 | 7-Fluoro-4-hydroxy-quinoline-3-carboxylic acid | 7-Fluoro-4-hydroxyquinoline-3-carboxylic acid | NSC...
- Ethyl 5-methyl-1-(4-methylbenzyl)-1H-1,2,3-triazole-4-carboxylateCAS: 1030014-84-6 Formula: C14H17N3O2 Molecular Weight: 259.31● In Stock — US warehouse, ships to EU* Item #: E358224View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- ethyl 5-methyl-1-[(4-methylphenyl)methyl]triazole-4-carboxylate
- SMILES
- CCOC(=O)C1=C(N(N=N1)CC2=CC=C(C=C2)C)C
- InChIKey
- WTHNJWJCZRLSAM-UHFFFAOYSA-N
- InChI
- 1S/C14H17N3O2/c1-4-19-14(18)13-11(3)17(16-15-13)9-12-7-5-10(2)6-8-12/h5-8H,4,9H2,1-3H3
- Synonyms
- 1030014-84-6 | ethyl 5-methyl-1-[(4-methylphenyl)methyl]triazole-4-carboxylate | Ethyl 5-methyl-1-[(4-methylphenyl)me...
- Ascorbic acid, Sodium-dependent vitamin C transporter 1;Sodium-dependent vitamin C transporter 2Solid PrimorTrace™ ? PrimorTrace™ — Aladdin's trace-metal-analysis line with ultra-low metal background. Use for ICP/AAS trace-metal work where contamination must be minimal. ≥99.99% metals basis● In Stock — Germany Item #: A103534View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2R)-2-[(1S)-1,2-dihydroxyethyl]-3,4-dihydroxy-2H-furan-5-one
- SMILES
- OC([C@]([C@@H](O)CO)([H])O1)=C(O)C1=O
- InChIKey
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N
- InChI
- 1S/C6H8O6/c7-1-2(8)5-3(9)4(10)6(11)12-5/h2,5,7-10H,1H2/t2-,5+/m0/s1
- Synonyms
- Ascorbicap | C-Long | Ferrous ascorbate | phosphorus oxichloride | Ceglion | Cenetone | Cetemican | hexamethyl-disilo...
- D-64131CAS: 74588-78-6 Formula: C16H13NO2 Molecular Weight: 251.28Solid ≥97%● In Stock — US warehouse, ships to EU* Item #: D127802View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (5-methoxy-1H-indol-2-yl)-phenylmethanone
- SMILES
- COC1=CC2=C(C=C1)NC(=C2)C(=O)C3=CC=CC=C3
- InChIKey
- ICMIJSRDISNKOC-UHFFFAOYSA-N
- InChI
- 1S/C16H13NO2/c1-19-13-7-8-14-12(9-13)10-15(17-14)16(18)11-5-3-2-4-6-11/h2-10,17H,1H3
- Synonyms
- CHEBI:92475 | FT-0700358 | (5-Methoxy-1H-indol-2-yl)-phenyl-methanone | ZCA58878 | (5-Methoxy-1H-indol-2-yl)(phenyl)m...
- (2S,3S)-Methyl 2-amino-3-hydroxybutanoate hydrochlorideCAS: 79617-27-9 Formula: C5H11NO3・HCl Molecular Weight: 169.64● In Stock — US warehouse, ships to EU* Item #: L354737View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- methyl (2S,3S)-2-amino-3-hydroxybutanoate;hydrochloride
- SMILES
- CC(C(C(=O)OC)N)O.Cl
- InChIKey
- OZSJLLVVZFTDEY-MMALYQPHSA-N
- InChI
- 1S/C5H11NO3.ClH/c1-3(7)4(6)5(8)9-2;/h3-4,7H,6H2,1-2H3;1H/t3-,4-;/m0./s1
- Synonyms
- Methyl L-allothreoninate hydrochloride | L-allo-Threonine methyl ester hydrochloride | H-allo-Thr-OMe HCl
- Asenapine maleateSolid ≥98%(HPLC)● In Stock — US warehouse, ships to EU* Item #: A124739View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (Z)-but-2-enedioic acid;(2S,6S)-9-chloro-4-methyl-13-oxa-4-azatetracyclo[12.4.0.02,6.07,12]octadeca-1(18),7(12),8,10,14,16-hexaene
- SMILES
- CN1CC2C(C1)C3=C(C=CC(=C3)Cl)OC4=CC=CC=C24.C(=CC(=O)O)C(=O)O
- InChIKey
- GMDCDXMAFMEDAG-CHHFXETESA-N
- InChI
- show more
- Synonyms
- Sycrest | (3aRS,12bRS)-5-Chloro-2-methyl-2,3,3a,12b-tetrahydro-1H-dibenzo(2,3:6,7)oxepino(4,5-c)pyrrole monomaleate ...
- Sulfatroxazole● In Stock — US warehouse, ships to EU* Item #: S357660View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-amino-N-(4,5-dimethyl-1,2-oxazol-3-yl)benzenesulfonamide
- SMILES
- CC1=C(ON=C1NS(=O)(=O)C2=CC=C(C=C2)N)C
- InChIKey
- DAUFGBIKKGOPJA-UHFFFAOYSA-N
- InChI
- 1S/C11H13N3O3S/c1-7-8(2)17-13-11(7)14-18(15,16)10-5-3-9(12)4-6-10/h3-6H,12H2,1-2H3,(H,13,14)
- Synonyms
- 4,5-Dimethyl-3-sulfanilamidoisoxazole; Isosulfafurazole; N1-(4,5-Dimethyl-3-isoxazolyl)sulfanilamide | 4-amino-N-(4,5...
- AsiaticosideSolid 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. ≥98%● In Stock — US warehouse, ships to EU* Item #: A111276View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC1CCC2(CCC3(C(=CCC4C3(CCC5C4(CC(C(C5(C)CO)O)O)C)C)C2C1C)C)C(=O)OC6C(C(C(C(O6)COC7C(C(C(C(O7)CO)OC8C(C(C(C(O8)C)O)O)O)O)O)O)O)O
- InChIKey
- WYQVAPGDARQUBT-FGWHUCSPSA-N
- InChI
- show more
- Synonyms
- (-)-SENECIONINE | NSC-36002 | (2alpha,3beta,4alpha)-2,3,23-TRIHYDROXYURS-12-EN-28-OIC ACID O-6-DEOXY-alpha-L-MANNOPYR...
- 7-Methoxy-1-methyl-3,4-dihydronaphthalen-2(1H)-oneCAS: 1204-23-5 Formula: C12H14O2 Molecular Weight: 190.238● In Stock — US warehouse, ships to EU* Item #: M302609View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 7-methoxy-1-methyl-3,4-dihydro-1H-naphthalen-2-one
- SMILES
- CC1C(=O)CCC2=C1C=C(C=C2)OC
- InChIKey
- DYIWPPSNJSVFED-UHFFFAOYSA-N
- InChI
- 1S/C12H14O2/c1-8-11-7-10(14-2)5-3-9(11)4-6-12(8)13/h3,5,7-8H,4,6H2,1-2H3
- Synonyms
- 1-methyl- 7-methoxy-2-tetralone | 7-methoxy-1-methyl-tetralin-2-one | DTXSID601305388 | AS-32497 | 1-methyl-7-methoxy...
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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.