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
24,635Navigate 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
102,623Explore 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)
19,695Find 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)
8,779Shop 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
- SKF 81297 hydrobromide◐ .Made to order · 8–12 wks Item #: S287546View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 9-chloro-5-phenyl-2,3,4,5-tetrahydro-1H-3-benzazepine-7,8-diol;hydrobromide
- SMILES
- C1CNCC(C2=CC(=C(C(=C21)Cl)O)O)C3=CC=CC=C3.Br
- InChIKey
- RMIJGBMRNYUZRG-UHFFFAOYSA-N
- InChI
- 1S/C16H16ClNO2.BrH/c17-15-11-6-7-18-9-13(10-4-2-1-3-5-10)12(11)8-14(19)16(15)20;/h1-5,8,13,18-20H,6-7,9H2;1H
- Synonyms
- CHLORMADINONE [WHO-DD] | (?)-6-Chloro-PB hydrobromide | Dorzolamid | (y)-6-Chloro-PB hydrobromide | 1H-3-Benzazepine-...
- SLIGRL-NH2 2TFACAS: 171436-38-7（free） Formula: C29H56N10O7.2CF3CO2H Molecular Weight: 770.84● In Stock — US warehouse, ships to EU* Item #: S396682View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- PAR-2 (1-6) amide (mouse, rat) trifluoroacetate salt;SLIGRL−NH2;Ser-Leu-Ile-Gly-Arg-Leu-amide trifluoroacetate salt;P...
- 6-Methyl-2-propyl-4-quinolinol● In Stock — US warehouse, ships to EU* Item #: M348498View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 6-methyl-2-propyl-1H-quinolin-4-one
- SMILES
- CCCC1=CC(=O)C2=C(N1)C=CC(=C2)C
- InChIKey
- GQBLIEIZISNQGM-UHFFFAOYSA-N
- InChI
- 1S/C13H15NO/c1-3-4-10-8-13(15)11-7-9(2)5-6-12(11)14-10/h5-8H,3-4H2,1-2H3,(H,14,15)
- Synonyms
- 6-methyl-2-propyl-1H-quinolin-4-one | MFCD02179765 | 1070879-86-5 | 6-Methyl-2-propylquinolin-4(1H)-one | DTXSID20651...
- FuscinCAS: 83-85-2 Formula: C15H16O5 Molecular Weight: 276.29◐ .Made to order · 8–12 wks Item #: F275507View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 5-hydroxy-4,8,8-trimethyl-9,10-dihydro-4H-pyrano[4,3-f]chromene-2,6-dione
- SMILES
- CC1C2=C(C(=O)C3=C(C2=CC(=O)O1)CCC(O3)(C)C)O
- InChIKey
- OSJKAGRXDVEZQO-UHFFFAOYSA-N
- InChI
- 1S/C15H16O5/c1-7-11-9(6-10(16)19-7)8-4-5-15(2,3)20-14(8)13(18)12(11)17/h6-7,17H,4-5H2,1-3H3
- Synonyms
- FUSCIN [MI] | DTXSID80874665 | 2H,4H-Benzo(1,2-b:4,3-c')dipyran-2,6(8H)-dione, 9,10-dihydro-5-hydroxy-4,8,8-trimethyl...
- [2,2'-Bipyridin]-3-amine● In Stock — US warehouse, ships to EU* Item #: B302139View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-pyridin-2-ylpyridin-3-amine
- SMILES
- C1=CC=NC(=C1)C2=C(C=CC=N2)N
- InChIKey
- JQTIUAVTCSZFNT-UHFFFAOYSA-N
- InChI
- 1S/C10H9N3/c11-8-4-3-7-13-10(8)9-5-1-2-6-12-9/h1-7H,11H2
- Synonyms
- MFCD13180435 | DTXSID60433370 | [2,2'-Bipyridin]amine | 2-(pyridin-2-yl)pyridin-3-amine | AKOS015903667 | [2,2'-Bipyr...
- [2,2'-Bipyridine]-5,5'-diMethanolCAS: 63361-65-9 Formula: C12H12N2O2 Molecular Weight: 216.24Solid ≥98%● In Stock — US warehouse, ships to EU* Item #: B304221View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- [6-[5-(hydroxymethyl)pyridin-2-yl]pyridin-3-yl]methanol
- SMILES
- C1=CC(=NC=C1CO)C2=NC=C(C=C2)CO
- InChIKey
- DVXJDRMCWWERRO-UHFFFAOYSA-N
- InChI
- 1S/C12H12N2O2/c15-7-9-1-3-11(13-5-9)12-4-2-10(8-16)6-14-12/h1-6,15-16H,7-8H2
- Synonyms
- 2,2'-Bipyridine]-5,5'-diyldimethanol
- 6-Nitro-2,3-xylidineCAS: 59146-96-2 Formula: C8H10N2O2 Molecular Weight: 166.18● In Stock — US warehouse, ships to EU* Item #: N159026View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2,3-dimethyl-6-nitroaniline
- SMILES
- CC1=C(C(=C(C=C1)[N+](=O)[O-])N)C
- InChIKey
- YEFYPFWBLCARLC-UHFFFAOYSA-N
- InChI
- 1S/C8H10N2O2/c1-5-3-4-7(10(11)12)8(9)6(5)2/h3-4H,9H2,1-2H3
- Synonyms
- (2,3-Dimethyl-6-nitrophenyl)amine | EN300-16597 | D85848 | DTXSID60344472 | InChI=1/C8H10N2O2/c1-5-3-4-7(10(11)12)8(9...
- Ethyl viologen diperchlorate● In Stock — US warehouse, ships to EU* Item #: E133401View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-ethyl-4-(1-ethylpyridin-1-ium-4-yl)pyridin-1-ium;diperchlorate
- SMILES
- CC[N+]1=CC=C(C=C1)C2=CC=[N+](C=C2)CC.[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O
- InChIKey
- HTNDMKDAPWJPEX-UHFFFAOYSA-L
- InChI
- 1S/C14H18N2.2ClHO4/c1-3-15-9-5-13(6-10-15)14-7-11-16(4-2)12-8-14;2*2-1(3,4)5/h5-12H,3-4H2,1-2H3;2*(H,2,3,4,5)/q+2;;/p-2
- Synonyms
- Ethyl viologen diperchlorate, 98% | F17121 | 1,1'-Diethyl-[4,4'-bipyridine]-1,1'-diium perchlorate | ETHYLVIOLOGENDIP...
- [3-(4-Chlorophenyl)-1,2,4-oxadiazol-5-yl]methanolCAS: 5372-40-7 Formula: C9H7ClN2O2 Molecular Weight: 210.62● In Stock — US warehouse, ships to EU* Item #: C356562View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- [3-(4-chlorophenyl)-1,2,4-oxadiazol-5-yl]methanol
- SMILES
- C1=CC(=CC=C1C2=NOC(=N2)CO)Cl
- InChIKey
- SNHGRCYDLKXNSH-UHFFFAOYSA-N
- InChI
- 1S/C9H7ClN2O2/c10-7-3-1-6(2-4-7)9-11-8(5-13)14-12-9/h1-4,13H,5H2
- Synonyms
- SCHEMBL5356293 | FT-0680039 | (3-(4-Chlorophenyl)-1,2,4-oxadiazol-5-yl)methanol | AKOS000125437 | [3-(4-chlorophenyl)...
- SKF 82958 hydrobromide◐ .Made to order · 8–12 wks Item #: S286982View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 9-chloro-5-phenyl-3-prop-2-enyl-1,2,4,5-tetrahydro-3-benzazepine-7,8-diol;hydrobromide
- SMILES
- C=CCN1CCC2=C(C(=C(C=C2C(C1)C3=CC=CC=C3)O)O)Cl.Br
- InChIKey
- WLXGFAVTAAQOFH-UHFFFAOYSA-N
- InChI
- 1S/C19H20ClNO2.BrH/c1-2-9-21-10-8-14-15(11-17(22)19(23)18(14)20)16(12-21)13-6-4-3-5-7-13;/h2-7,11,16,22-23H,1,8-10,12H2;1H
- Synonyms
- Chloro-APB hydrobromide | (±)-SKF-82958 hydrobromide
- SLIGKV-NH2 TFA saltCAS: 190383-13-2(free) Formula: C28H54N8O7(free) Molecular Weight: 614.78(free)◐ .Made to order · 8–12 wks Item #: S275145View ProductPricing & Pack Sizes
Technical Identifiers
- Bicifadine hydrochlorideSolid ≥95%◐ .Made to order · 8–12 wks Item #: B288327View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-(4-methylphenyl)-3-azabicyclo[3.1.0]hexane;hydrochloride
- SMILES
- CC1=CC=C(C=C1)C23CC2CNC3.Cl
- InChIKey
- OTZOPAFTLUOBOM-UHFFFAOYSA-N
- InChI
- 1S/C12H15N.ClH/c1-9-2-4-10(5-3-9)12-6-11(12)7-13-8-12;/h2-5,11,13H,6-8H2,1H3;1H
- Synonyms
- 1-(4-methylphenyl)-3-azabicyclo[3.1.0]hexane;hydrochloride | DTXSID20985128 | C12H15N.HCl | FT-0663105 | (-)-Bicifadi...
![[2,2'-Bipyridin]-3-amine - ≥95% CAS No(105166-53-8) by Aladdin Scientific](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/B/3/B302139.png)
![[2,2'-Bipyridine]-5,5'-diMethanol - ≥98% CAS No(63361-65-9) by Aladdin Scientific](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/B/3/B304221.png)
![[3-(4-Chlorophenyl)-1,2,4-oxadiazol-5-yl]methanol - ≥97% CAS No(5372-40-7) by Aladdin Scientific](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/C/3/C356562.png)
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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.