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
Browse by type, application, or key specifications such as purity, grade, packaging, and handling requirements.
136,965 products
Shop by category
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
- DAMBO-P◐ .Made to order · 8–12 wks Item #: D275911View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- 8-(3,4-Diaminophenyl)-2,6-bis(2-carboxyethyl)-4,4-difluoro-1,3,5,7-tetramethyl-4-bora-3a,4a-diaza-s-indacene
- Diaveridine hydrochloride◐ .Made to order · 8–12 wks Item #: D275621View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- 5-(3,4-Dimethoxybenzyl)pyrimidine-2,4-diaminehydrochloride
- MSPGCAS: 169209-64-7 Formula: C9H11NO5S Molecular Weight: 245.25◐ .Made to order · 8–12 wks Item #: M288216View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-amino-2-(4-sulfophenyl)propanoic acid
- SMILES
- CC(C1=CC=C(C=C1)S(=O)(=O)O)(C(=O)O)N
- InChIKey
- MVDSFPIEJILRME-UHFFFAOYSA-N
- InChI
- 1S/C9H11NO5S/c1-9(10,8(11)12)6-2-4-7(5-3-6)16(13,14)15/h2-5H,10H2,1H3,(H,11,12)(H,13,14,15)
- Synonyms
- FT-0763343 | NCGC00024827-02 | BDBM85015 | AKOS024458669 | DTXSID70398269 | (+/-)-alpha-Methyl-(4-sulfonophenyl)glyci...
- MTICCAS: 3413-72-7 Formula: C5H8N6O Molecular Weight: 168.16● In Stock — US warehouse, ships to EU* Item #: M356433View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-(2-methyliminohydrazinyl)-1H-imidazole-5-carboxamide
- SMILES
- CN=NNC1=C(NC=N1)C(=O)N
- InChIKey
- MVBPAIHFZZKRGD-UHFFFAOYSA-N
- InChI
- 1S/C5H8N6O/c1-7-11-10-5-3(4(6)12)8-2-9-5/h2H,1H3,(H2,6,12)(H,7,10)(H,8,9)
- Synonyms
- 5-(3-Methyl-1-triazeno)imidazole-4-carboxamide | NSC-40734
- 8-Chloro-6-methyl-2-phenyl-4-quinolinol● In Stock — US warehouse, ships to EU* Item #: C344053View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 8-chloro-6-methyl-2-phenyl-1H-quinolin-4-one
- SMILES
- CC1=CC2=C(C(=C1)Cl)NC(=CC2=O)C3=CC=CC=C3
- InChIKey
- OZQNRKSVUNYDNR-UHFFFAOYSA-N
- InChI
- 1S/C16H12ClNO/c1-10-7-12-15(19)9-14(11-5-3-2-4-6-11)18-16(12)13(17)8-10/h2-9H,1H3,(H,18,19)
- Synonyms
- DTXSID00653732 | 8-Chloro-4-hydroxy-6-methyl-2-phenylquinoline | AKOS005903643 | 8-chloro-6-methyl-2-phenylquinolin-4...
- DibromoacetonitrileLiquid ≥97%● In Stock — US warehouse, ships to EU* Item #: D303447View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2,2-dibromoacetonitrile
- SMILES
- C(#N)C(Br)Br
- InChIKey
- NDSBDLSWTGLNQA-UHFFFAOYSA-N
- InChI
- 1S/C2HBr2N/c3-2(4)1-5/h2H
- Synonyms
- Acetonitrile, dibromo- | DIBROMOACETONITRILE [IARC] | InChI=1/C2HBr2N/c3-2(4)1-5/h2 | NCGC00259868-01 | AKOS006220481...
- DichlormidLiquid ≥97%● In Stock — Germany Item #: D108057View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2,2-dichloro-N,N-bis(prop-2-enyl)acetamide
- SMILES
- C=CCN(CC=C)C(=O)C(Cl)Cl
- InChIKey
- YRMLFORXOOIJDR-UHFFFAOYSA-N
- InChI
- 1S/C8H11Cl2NO/c1-3-5-11(6-4-2)8(12)7(9)10/h3-4,7H,1-2,5-6H2
- Synonyms
- E901J4382O | C18782 | CHEBI:81956 | FT-0639405 | N,N-Diallyl-2,3-dichloroacetamide | N,N-Diallyldichloroacetamide | 2...
- Magnesium 2-aminoacetateCAS: 14783-68-7 Formula: C4H8MgN2O4 Molecular Weight: 172.43● In Stock — US warehouse, ships to EU* Item #: M302926View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- magnesium;2-aminoacetate
- SMILES
- C(C(=O)[O-])N.C(C(=O)[O-])N.[Mg+2]
- InChIKey
- AACACXATQSKRQG-UHFFFAOYSA-L
- InChI
- 1S/2C2H5NO2.Mg/c2*3-1-2(4)5;/h2*1,3H2,(H,4,5);/q;;+2/p-2
- Synonyms
- Magnesium,bis(glycinato)- (6CI,7CI,8CI) | MAGNESIUM GLYCINATE [VANDF] | SCHEMBL33936 | Bis(glycinato-N,O)magnesium | ...
- Ethyl 4-phenylsulfanylbenzoateCAS: 10129-07-4 Formula: C15H14O2S Molecular Weight: 258.339● In Stock — US warehouse, ships to EU* Item #: E330649View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- ethyl 4-phenylsulfanylbenzoate
- SMILES
- CCOC(=O)C1=CC=C(C=C1)SC2=CC=CC=C2
- InChIKey
- MWWSTEHPUCOQQV-UHFFFAOYSA-N
- InChI
- 1S/C15H14O2S/c1-2-17-15(16)12-8-10-14(11-9-12)18-13-6-4-3-5-7-13/h3-11H,2H2,1H3
- Synonyms
- 4-phenylsulfanylbenzoic acid ethyl ester | SCHEMBL20544907 | Benzoic acid, 4-(phenylthio)-, ethyl ester | Ethyl 4-(ph...
- Ethyl 4-tert-butylbenzoylformateCAS: 80120-36-1 Formula: C14H18O3 Molecular Weight: 234.3● In Stock — US warehouse, ships to EU* Item #: E358491View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- ethyl 2-(4-tert-butylphenyl)-2-oxoacetate
- SMILES
- CCOC(=O)C(=O)C1=CC=C(C=C1)C(C)(C)C
- InChIKey
- VQDPLASXAHWKJX-UHFFFAOYSA-N
- InChI
- 1S/C14H18O3/c1-5-17-13(16)12(15)10-6-8-11(9-7-10)14(2,3)4/h6-9H,5H2,1-4H3
- Synonyms
- FS-3967 | Ethyl 2-(4-(tert-butyl)phenyl)-2-oxoacetate | FT-0625908 | Ethyl 4-tert-butylbenzoylformate | Ethyl2-(4-(te...
- Magnesium BorateCAS: 13703-82-7 Formula: MgB2O4 Molecular Weight: 109.92● In Stock — US warehouse, ships to EU* Item #: M302501View ProductPricing & Pack Sizes
Technical Identifiers
- Magnesium acrylateSolid ≥99%● In Stock — US warehouse, ships to EU* Item #: M304023View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- magnesium;prop-2-enoate
- SMILES
- C=CC(=O)[O-].C=CC(=O)[O-].[Mg+2]
- InChIKey
- DWLAVVBOGOXHNH-UHFFFAOYSA-L
- InChI
- 1S/2C3H4O2.Mg/c2*1-2-3(4)5;/h2*2H,1H2,(H,4,5);/q;;+2/p-2
- Synonyms
- 2-Propenoic acid | Magnesium Salt
Fast Shipping Same-day shipping on in-stock items
Technical Details Quality & specification info on every product page
Pack Size Options Multiple packaging sizes with pricing access from listing
R&D Use Only Products supplied for research and development use
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.