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
24,653Navigate 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
102,665Explore 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)
19,717Find 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)
8,793Shop 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
- Naltrindole hydrochlorideCAS: 111469-81-9 Formula: C26H26N2O3 · HCl Molecular Weight: 450.96Solid ≥99%● In Stock — US warehouse, ships to EU* Item #: N302210View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- C1CC1CN2CCC34C5C6=C(CC3(C2CC7=C4C(=C(C=C7)O)O5)O)C8=CC=CC=C8N6.Cl
- InChIKey
- KNJKRQXCFJCQHC-IDRHMUJXSA-N
- InChI
- show more
- Synonyms
- Naltrindole hydrochloride, solid | Naltrindole HCl | 4,8-Methanobenzofuro[2,3-a]pyrido[4,3-b]carbazole-1,8a(9H)-diol,...
- NVP-BVU972CAS: 1185763-69-2 Formula: C20H16N6 Molecular Weight: 340.38● In Stock — US warehouse, ships to EU* Item #: N128061View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 6-[[6-(1-methylpyrazol-4-yl)imidazo[1,2-b]pyridazin-3-yl]methyl]quinoline
- SMILES
- CN1C=C(C=N1)C2=NN3C(=NC=C3CC4=CC5=C(C=C4)N=CC=C5)C=C2
- InChIKey
- RNCNPRCUHHDYPC-UHFFFAOYSA-N
- InChI
- 1S/C20H16N6/c1-25-13-16(11-23-25)19-6-7-20-22-12-17(26(20)24-19)10-14-4-5-18-15(9-14)3-2-8-21-18/h2-9,11-13H,10H2,1H3
- Synonyms
- NCGC00346689-02 | (.+/-.)-2-Ethyloxirane | Allylglycide ether | BDBM50146169 | MLS006010964 | AS-56284 | C71592 | RNC...
- AMPA ReceptorsCAS: 875927-64-3 Formula: C17H19FN2O2S Molecular Weight: 334.41Solid ≥98%(HPLC)● In Stock — US warehouse, ships to EU* Item #: U288277View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-[(2R)-5-(6-fluoropyridin-3-yl)-2,3-dihydro-1H-inden-2-yl]propane-2-sulfonamide
- SMILES
- CC(C)S(=O)(=O)NC1CC2=C(C1)C=C(C=C2)C3=CN=C(C=C3)F
- InChIKey
- QXQSUBKWSHMXDP-MRXNPFEDSA-N
- InChI
- 1S/C17H19FN2O2S/c1-11(2)23(21,22)20-16-8-13-4-3-12(7-15(13)9-16)14-5-6-17(18)19-10-14/h3-7,10-11,16,20H,8-9H2,1-2H3/t16-/m1/s1
- Synonyms
- N-[(2S)-5-(6-Fluoro-3-pyridinyl)-2,3-dihydro-1H-inden-2-yl]-2-propanesulfonamide
- Chromium nitride● In Stock — US warehouse, ships to EU* Item #: C302617View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- azane;chromium
- SMILES
- N.[Cr]
- InChIKey
- SJKRCWUQJZIWQB-UHFFFAOYSA-N
- InChI
- 1S/Cr.H3N/h;1H3
- Synonyms
- 12053-27-9|azane;chromium|MFCD00016048|Chromium nitride (mixture of Cr2N and CrN), 325 mesh powder
- Ro 61-8048● In Stock — US warehouse, ships to EU* Item #: R168334View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 3,4-dimethoxy-N-[4-(3-nitrophenyl)-1,3-thiazol-2-yl]benzenesulfonamide
- SMILES
- COC1=C(C=C(C=C1)S(=O)(=O)NC2=NC(=CS2)C3=CC(=CC=C3)[N+](=O)[O-])OC
- InChIKey
- NDPBMCKQJOZAQX-UHFFFAOYSA-N
- InChI
- 1S/C17H15N3O6S2/c1-25-15-7-6-13(9-16(15)26-2)28(23,24)19-17-18-14(10-27-17)11-4-3-5-12(8-11)20(21)22/h3-10H,1-2H3,(H,18,19)
- Synonyms
- HB0556 | Ro 61-8048, >=98% (HPLC) | EX-A805 | Ro-61-8048 | Ro61-8048 | DTXSID20415218 | Ro 61-8048 | 3,4-dimethoxy-N-...
- VAL-083, DNA cross-linking agent● In Stock — US warehouse, ships to EU* Item #: V125883View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (1S,2R)-1-[(2S)-oxiran-2-yl]-2-[(2R)-oxiran-2-yl]ethane-1,2-diol
- SMILES
- C1C(O1)C(C(C2CO2)O)O
- InChIKey
- AAFJXZWCNVJTMK-GUCUJZIJSA-N
- InChI
- 1S/C6H10O4/c7-5(3-1-9-3)6(8)4-2-10-4/h3-8H,1-2H2/t3-,4+,5+,6-
- Synonyms
- (1R,2S)-1-((R)-oxiran-2-yl)-2-((S)-oxiran-2-yl)ethane-1,2-diol | MS-22831 | (1S,2R)-1-[(2S)-oxiran-2-yl]-2-[(2R)-oxir...
- Urocortin II (human)◐ .Made to order · 8–12 wks Item #: U275590View ProductPricing & Pack Sizes
Technical Identifiers
- VAS 2870CAS: 722456-31-7 EC Number: 804-251-4 PubChem CID: 4058452 Formula: C18H12N6OS Molecular Weight: 360.39● In Stock — US warehouse, ships to EU* Item #: V276146View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-(3-benzyltriazolo[4,5-d]pyrimidin-7-yl)sulfanyl-1,3-benzoxazole
- SMILES
- C1=CC=C(C=C1)CN2C3=C(C(=NC=N3)SC4=NC5=CC=CC=C5O4)N=N2
- InChIKey
- HZSOKHVVANONPV-UHFFFAOYSA-N
- InChI
- 1S/C18H12N6OS/c1-2-6-12(7-3-1)10-24-16-15(22-23-24)17(20-11-19-16)26-18-21-13-8-4-5-9-14(13)25-18/h1-9,11H,10H2
- Synonyms
- XDB45631 | 1,3-benzoxazol-2-yl 3-benzyl-3H-[1,2,3]triazolo[4,5-d]pyrimidin-7-yl sulfide | NOX Inhibitor III, VAS2870 ...
- Urocortin II (mouse)（TFA）CAS: 330648-32-3(free) Formula: C187 H320N56O50(free) Molecular Weight: 4152.96(free)● In Stock — US warehouse, ships to EU* Item #: U274708View ProductPricing & Pack Sizes
Technical Identifiers
- Urocortin III (human)◐ .Made to order · 8–12 wks Item #: U275511View ProductPricing & Pack Sizes
Technical Identifiers
- Ruxolitinib phosphate salt, Tyrosine-protein kinase JAK2 inhibitorCAS: 1092939-17-7 EC Number: 641-390-8 PubChem CID: 25127112 Formula: C17H21N6O4P Molecular Weight: 404.4● In Stock — US warehouse, ships to EU* Item #: R171967View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3R)-3-cyclopentyl-3-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)pyrazol-1-yl]propanenitrile;phosphoric acid
- SMILES
- C1CCC(C1)C(CC#N)N2C=C(C=N2)C3=C4C=CNC4=NC=N3.OP(=O)(O)O
- InChIKey
- JFMWPOCYMYGEDM-XFULWGLBSA-N
- InChI
- show more
- Synonyms
- (R)-3-(4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl)-3-cyclopentylpropanenitrilephosphate | Jakavi (TN) | (3R)...
- VCH-916Solid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥98%◐ .Made to order · 8–12 wks Item #: V128073View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- potassium;5-(cyclohexen-1-yl)-3-[(4-methoxycyclohexyl)-(4-methylcyclohexanecarbonyl)amino]thiophene-2-carboxylate
- SMILES
- CC1CCC(CC1)C(=O)N(C2CCC(CC2)OC)C3=C(SC(=C3)C4=CCCCC4)C(=O)[O-].[K+]
- InChIKey
- RYXIBQLRUHDYEE-UHFFFAOYSA-M
- InChI
- show more
- Synonyms
- HY-13465 | VCH916 | VCH-916 | F84913 | potassium,5-(cyclohexen-1-yl)-3-[(4-methoxycyclohexyl)-(4-methylcyclohexanecar...
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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.