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
102,621Explore 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
- cyclofenil, Estrogen receptor modulator● In Stock — US warehouse, ships to EU* Item #: C133771View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- [4-[(4-acetyloxyphenyl)-cyclohexylidenemethyl]phenyl] acetate
- SMILES
- CC(=O)OC1=CC=C(C=C1)C(=C2CCCCC2)C3=CC=C(C=C3)OC(=O)C
- InChIKey
- GVOUFPWUYJWQSK-UHFFFAOYSA-N
- InChI
- 1S/C23H24O4/c1-16(24)26-21-12-8-19(9-13-21)23(18-6-4-3-5-7-18)20-10-14-22(15-11-20)27-17(2)25/h8-15H,3-7H2,1-2H3
- Synonyms
- Fertodur | (Cyclohexylidenemethanediyl)dibenzene-4,1-diyl diacetate | [4-[(4-Acetyloxyphenyl)-cyclohexylidenemethyl]p...
- ε-N-CrotonyllysineSolid ≥98%● In Stock — US warehouse, ships to EU* Item #: N302813View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-amino-6-(but-2-enoylamino)hexanoic acid
- SMILES
- CC=CC(=O)NCCCCC(C(=O)O)N
- InChIKey
- IZHPCCLNIDDVFG-UHFFFAOYSA-N
- InChI
- 1S/C10H18N2O3/c1-2-5-9(13)12-7-4-3-6-8(11)10(14)15/h2,5,8H,3-4,6-7,11H2,1H3,(H,12,13)(H,14,15)
- Synonyms
- N6-[(2E)-1-Oxo-2-buten-1-yl]-L-lysine；N6-(But-2-enoyl)-L-lysine；H-Lys(crotonyl)-OH
- 4-(DICHLOROMETHYL)BENZONITRILECAS: 74231-65-5 Formula: C8H5Cl2N Molecular Weight: 186.04● In Stock — US warehouse, ships to EU* Item #: D304531View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-(dichloromethyl)benzonitrile
- SMILES
- C1=CC(=CC=C1C#N)C(Cl)Cl
- InChIKey
- NMXMVMJWZDVFMH-UHFFFAOYSA-N
- InChI
- 1S/C8H5Cl2N/c9-8(10)7-3-1-6(5-11)2-4-7/h1-4,8H
- Synonyms
- 4-(dichloromethyl)benzonitrile|74231-65-5|MFCD00045606|Benzonitrile, 4-(dichloromethyl)-|SCHEMBL1342407|DTXSID9038034...
- dimethyl 2-(4-methoxycarbonyl-2-nitrophenyl)propanedioateCAS: 1160293-27-5 Formula: C13H13NO8 Molecular Weight: 311.24● In Stock — US warehouse, ships to EU* Item #: D302254View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- dimethyl 2-(4-methoxycarbonyl-2-nitrophenyl)propanedioate
- SMILES
- COC(=O)C1=CC(=C(C=C1)C(C(=O)OC)C(=O)OC)[N+](=O)[O-]
- InChIKey
- PMCBNFSIKVRNNK-UHFFFAOYSA-N
- InChI
- 1S/C13H13NO8/c1-20-11(15)7-4-5-8(9(6-7)14(18)19)10(12(16)21-2)13(17)22-3/h4-6,10H,1-3H3
- Synonyms
- 1160293-27-5|1,3-Dimethyl 2-[4-(methoxycarbonyl)-2-nitrophenyl]propanedioate|dimethyl 2-(4-methoxycarbonyl-2-nitrophe...
- dimethyl dicarbonatefor histidine methylation● In Stock — US warehouse, ships to EU* Item #: D135145View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- methoxycarbonyl methyl carbonate
- SMILES
- COC(=O)OC(=O)OC
- InChIKey
- GZDFHIJNHHMENY-UHFFFAOYSA-N
- InChI
- 1S/C4H6O5/c1-7-3(5)9-4(6)8-2/h1-2H3
- Synonyms
- DMPC | GZDFHIJNHHMENY-UHFFFAOYSA-N | Dicarbonic acid, dimethyl ester | dimethyl dicarbonate | Pyrocarbonic acid dimet...
- 4-(N-Methyl-N-nitrosamino)-4-(3-pyridyl)butanalCAS: 64091-90-3 Formula: C10H13N3O2 Molecular Weight: 207.23◐ .Made to order · 8–12 wks Item #: M275473View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-methyl-N-(4-oxo-1-pyridin-3-ylbutyl)nitrous amide
- SMILES
- CN(C(CCC=O)C1=CN=CC=C1)N=O
- InChIKey
- FRJHUNPWTKLYGL-UHFFFAOYSA-N
- InChI
- 1S/C10H13N3O2/c1-13(12-15)10(5-3-7-14)9-4-2-6-11-8-9/h2,4,6-8,10H,3,5H2,1H3
- Synonyms
- N-methyl-N-(4-oxo-1-pyridin-3-ylbutyl)nitrous amide | 4-(N-Nitroso-N-methylamino)-4-(3-pyridyl)butanal | gamma-(Methy...
- 4-(Phenylethynyl)benzaldehydeSolid ≥97%● In Stock — US warehouse, ships to EU* Item #: D304032View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-(2-phenylethynyl)benzaldehyde
- SMILES
- C1=CC=C(C=C1)C#CC2=CC=C(C=C2)C=O
- InChIKey
- SYCFYQFCFHKYPI-UHFFFAOYSA-N
- InChI
- 1S/C15H10O/c16-12-15-10-8-14(9-11-15)7-6-13-4-2-1-3-5-13/h1-5,8-12H
- Synonyms
- A831402 | FT-0616550 | AKOS015888780 | DS-12738 | p-Bromophenacylamine | J-515945 | Benzaldehyde, 4-(phenylethynyl)- ...
- cis-5-Norbornene-exo-2,3-dicarboxylic anhydrideSolid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥95%● In Stock — US warehouse, ships to EU* Item #: C111445View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (1S,2S,6R,7R)-4-oxatricyclo[5.2.1.02,6]dec-8-ene-3,5-dione
- SMILES
- C1C2C=CC1C3C2C(=O)OC3=O
- InChIKey
- KNDQHSIWLOJIGP-RNGGSSJXSA-N
- InChI
- 1S/C9H8O3/c10-8-6-4-1-2-5(3-4)7(6)9(11)12-8/h1-2,4-7H,3H2/t4-,5+,6+,7-
- Synonyms
- endicanhydride | exo-3,6-Methylene-4-cyclohexene-1,2-dicarboxylic Anhydride | (3AR,4R,7S,7AS)-3A,4,7,7A-TETRAHYDRO-4,...
- 4-Acetamidophenol(APAP)Solid AR ? Analytical Reagent grade — high-purity chemicals meeting strict assay limits for lab analysis. Use when accuracy matters and trace impurities could skew results. ≥99%● In Stock — US warehouse, ships to EU* Item #: A105808View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-(4-hydroxyphenyl)acetamide
- SMILES
- CC(=O)NC1=CC=C(C=C1)O
- InChIKey
- RZVAJINKPMORJF-UHFFFAOYSA-N
- InChI
- 1S/C8H9NO2/c1-6(10)9-7-2-4-8(11)5-3-7/h2-5,11H,1H3,(H,9,10)
- Synonyms
- APAP | N-Acetyl-p-aminophenol | Injectapap | Datril | Algotropyl | p-Hydroxyacetanilide | Acetaminofen | Lonarid | ac...
- 1-D-3-Deoxy-phosphatidylinositolFormula: C41H79O12P Molecular Weight: 795● In Stock — US warehouse, ships to EU* Item #: D388747View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- DPI | 3-Deoxy-D-myo-inositol 1-[(R)-2,3-bis(hexa-decanoyloxy)propyl hydrogenphosphate]
- 1-Deoxynojirimycin, Inhibitor of alpha glucosidaseSolid 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 #: D101242View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2R,3R,4R,5S)-2-(hydroxymethyl)piperidine-3,4,5-triol
- SMILES
- C1C(C(C(C(N1)CO)O)O)O
- InChIKey
- LXBIFEVIBLOUGU-JGWLITMVSA-N
- InChI
- 1S/C6H13NO4/c8-2-3-5(10)6(11)4(9)1-7-3/h3-11H,1-2H2/t3-,4+,5-,6-/m1/s1
- Synonyms
- (2R,3R,4R,5S)-2-Hydroxymethyl-piperidine-3,4,5-triol | (2R,3R,4R,5S)-2-(Hydroxymethyl)-3,4,5-piperidinetriol | (+)-1-...
- iCRT5◐ .Made to order · 8–12 wks Item #: I276317View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- (Z)-4-(5-(3,4-Dimethoxybenzylidene)-4-oxo-2-thioxothiazolidin-3-yl)butanoicacid
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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.