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).
Targets & Pathways
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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
24,639Navigate 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
2,815PROTAC 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
102,615Explore 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
- proquazoneCAS: 22760-18-5 Formula: C18H18N2O Molecular Weight: 278.35Solid 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 #: P693912View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 7-methyl-4-phenyl-1-propan-2-ylquinazolin-2-one
- SMILES
- CC1=CC2=C(C=C1)C(=NC(=O)N2C(C)C)C3=CC=CC=C3
- InChIKey
- JTIGKVIOEQASGT-UHFFFAOYSA-N
- InChI
- 1S/C18H18N2O/c1-12(2)20-16-11-13(3)9-10-15(16)17(19-18(20)21)14-7-5-4-6-8-14/h4-12H,1-3H3
- Synonyms
- Proquazonum, Proquazona|RU 43-715|Sandoz-43-715
- L-778123CAS: 183499-57-2 Formula: C22H20ClN5O Molecular Weight: 405.88Solid 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 #: O696354View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-[[5-[[4-(3-chlorophenyl)-3-oxopiperazin-1-yl]methyl]imidazol-1-yl]methyl]benzonitrile
- SMILES
- C1CN(C(=O)CN1CC2=CN=CN2CC3=CC=C(C=C3)C#N)C4=CC(=CC=C4)Cl
- InChIKey
- JNUGFGAVPBYSHF-UHFFFAOYSA-N
- InChI
- 1S/C22H20ClN5O/c23-19-2-1-3-20(10-19)28-9-8-26(15-22(28)29)14-21-12-25-16-27(21)13-18-6-4-17(11-24)5-7-18/h1-7,10,12,16H,8-9,13-15H2
- Synonyms
- 4-((5-((4-(3-Chlorophenyl)-3-oxopiperazin-1-yl)methyl)-1H-imidazol-1-yl)methyl)benzonitrile
- 3',4',5',5,7-PentamethoxyflavoneSolid 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 #: P695129View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 5,7-dimethoxy-2-(3,4,5-trimethoxyphenyl)chromen-4-one
- SMILES
- COC1=CC2=C(C(=C1)OC)C(=O)C=C(O2)C3=CC(=C(C(=C3)OC)OC)OC
- InChIKey
- GIKVSFNAEBQLGB-UHFFFAOYSA-N
- InChI
- 1S/C20H20O7/c1-22-12-8-15(23-2)19-13(21)10-14(27-16(19)9-12)11-6-17(24-3)20(26-5)18(7-11)25-4/h6-10H,1-5H3
- Synonyms
- 5,7-Dimethoxy-2-(3,4,5-trimethoxyphenyl)-4H-chromen-4-one
- FluanisoneSolid 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 #: F693581View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-(4-fluorophenyl)-4-[4-(2-methoxyphenyl)piperazin-1-yl]butan-1-one
- SMILES
- COC1=CC=CC=C1N2CCN(CC2)CCCC(=O)C3=CC=C(C=C3)F
- InChIKey
- IRYFCWPNDIUQOW-UHFFFAOYSA-N
- InChI
- 1S/C21H25FN2O2/c1-26-21-7-3-2-5-19(21)24-15-13-23(14-16-24)12-4-6-20(25)17-8-10-18(22)11-9-17/h2-3,5,7-11H,4,6,12-16H2,1H3
- Synonyms
- Sedalande|Haloanison
- DiamfenetideCAS: 36141-82-9 Formula: C20H24N2O5 Molecular Weight: 372.41Moligand™ ? 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 #: N693972View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-[4-[2-[2-(4-acetamidophenoxy)ethoxy]ethoxy]phenyl]acetamide
- SMILES
- CC(=O)NC1=CC=C(C=C1)OCCOCCOC2=CC=C(C=C2)NC(=O)C
- InChIKey
- JNEZCZPNQCQCFK-UHFFFAOYSA-N
- InChI
- 1S/C20H24N2O5/c1-15(23)21-17-3-7-19(8-4-17)26-13-11-25-12-14-27-20-9-5-18(6-10-20)22-16(2)24/h3-10H,11-14H2,1-2H3,(H,21,23)(H,22,24)
- Synonyms
- N,N'-(((oxybis(ethane-2,1-diyl))bis(oxy))bis(4,1-phenylene))diacetamide
- SteproninSolid 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 #: S694038View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-[2-(thiophene-2-carbonylsulfanyl)propanoylamino]acetic acid
- SMILES
- CC(C(=O)NCC(=O)O)SC(=O)C1=CC=CS1
- InChIKey
- JNYSEDHQJCOWQU-UHFFFAOYSA-N
- InChI
- 1S/C10H11NO4S2/c1-6(9(14)11-5-8(12)13)17-10(15)7-3-2-4-16-7/h2-4,6H,5H2,1H3,(H,11,14)(H,12,13)
- Synonyms
- Tiase|2-(2-((Thiophene-2-carbonyl)thio)propanamido)acetic acid|TTPG|Prostenoglycine
- β-GlucogallinSolid 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 #: G695673View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- [(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl] 3,4,5-trihydroxybenzoate
- SMILES
- C1=C(C=C(C(=C1O)O)O)C(=O)OC2C(C(C(C(O2)CO)O)O)O
- InChIKey
- GDVRUDXLQBVIKP-HQHREHCSSA-N
- InChI
- 1S/C13H16O10/c14-3-7-9(18)10(19)11(20)13(22-7)23-12(21)4-1-5(15)8(17)6(16)2-4/h1-2,7,9-11,13-20H,3H2/t7-,9-,10+,11-,13+/m1/s1
- Synonyms
- 1-O-Galloyl-β-D-glucose|beta-Glucogallin|β-D-Glucopyranose, 1-(3,4,5-trihydroxybenzoate)
- Recombinant Human Serpin E1/PAI-1 ProteinLyophilized Animal Free ? Animal-free — produced without animal-derived components to reduce contamination risk. Use in biomanufacturing and culture avoiding animal-origin material. Carrier Free ? Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays. Bioactive ? Bioactive grade — verified to retain biological activity in functional assays. Use when the molecule must be functionally active, not just pure. ActiBioPure™ ? ActiBioPure™ — Aladdin's premier line for bioactive and recombinant products. Use when both high purity and preserved biological activity are required. His Tag ? His tag grade — recombinant protein bearing a His tag for affinity purification/detection. Use to purify, immobilize, or detect the tagged protein. ≥95%(SDS-PAGE)● In Stock — US warehouse, ships to EU* Item #: rp181294View ProductPricing & Pack Sizes
Technical Identifiers
- Species
- Human
- Accession #
- P05121
- Expression system
- HEK293
- Protein Day
- C-His
- Endotoxin Concentration
- <1.0 EU/μg
- Bioactivity
- Immobilized Recombinant Human Serpin E1/PAI-1 Protein (rp181294) at 2.0 μg/mL can bind PAI1 Mouse mAb (Ab120074) with the EC50 of 75 ng/mL.
- Synonyms
- Endothelial plasminogen activator inhibitor|Nexin|PAI1|PAI-1|PAISerpin E1|PLANH1|PLANH1plasminogen activator inhibito...
- Nickel(II) octanoateCAS: 4995-91-9 Formula: C16H30NiO4 Molecular Weight: 345.10● In Stock — US warehouse, ships to EU* Item #: N707338View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- nickel(2+);octanoate
- SMILES
- CCCCCCCC(=O)[O-].CCCCCCCC(=O)[O-].[Ni+2]
- InChIKey
- DVTHIMLUHWEZOM-UHFFFAOYSA-L
- InChI
- 1S/2C8H16O2.Ni/c2*1-2-3-4-5-6-7-8(9)10;/h2*2-7H2,1H3,(H,9,10);/q;;+2/p-2
- Pentaerythritol glycidyl etherViscosity:~330 cPs● In Stock — Germany Item #: P708355View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-[[3-(oxiran-2-ylmethoxy)-2,2-bis(oxiran-2-ylmethoxymethyl)propoxy]methyl]oxirane
- SMILES
- C1C(O1)COCC(COCC2CO2)(COCC3CO3)COCC4CO4
- InChIKey
- PLDLPVSQYMQDBL-UHFFFAOYSA-N
- InChI
- 1S/C17H28O8/c1(13-5-22-13)18-9-17(10-19-2-14-6-23-14,11-20-3-15-7-24-15)12-21-4-16-8-25-16/h13-16H,1-12H2
- Synonyms
- Pentaerythritol tetraglycidyl ether|-[[3-(oxiran-2-ylmethoxy)-2,2-bis(oxiran-2-ylmethoxymethyl)propoxy]methyl]oxirane
- AdenineSolid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. for Cell culture ? Cell-culture grade — low endotoxin and contaminants to support viable cell growth. Use in mammalian/other cell culture media and supplements. ≥99%● In Stock — Germany Item #: A720493View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 7H-purin-6-amine
- SMILES
- Nc1ncnc2[nH]cnc12
- InChIKey
- GFFGJBXGBJISGV-UHFFFAOYSA-N
- InChI
- 1S/C5H5N5/c6-4-3-5(9-1-7-3)10-2-8-4/h1-2H,(H3,6,7,8,9,10)
- Synonyms
- 6-Aminopurine Vitamin B4
- SB408124, Antagonist of OX 1 receptor;Antagonist of OX 2 receptorCAS: 288150-92-5 EC Number: 636-686-9 PubChem CID: 4331799 Formula: C19H18F2N4O Molecular Weight: 356.37Moligand™ ? 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 #: S126715View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-(6,8-difluoro-2-methylquinolin-4-yl)-3-[4-(dimethylamino)phenyl]urea
- SMILES
- CC1=CC(=C2C=C(C=C(C2=N1)F)F)NC(=O)NC3=CC=C(C=C3)N(C)C
- InChIKey
- JTARFZSNUAGHRB-UHFFFAOYSA-N
- InChI
- 1S/C19H18F2N4O/c1-11-8-17(15-9-12(20)10-16(21)18(15)22-11)24-19(26)23-13-4-6-14(7-5-13)25(2)3/h4-10H,1-3H3,(H2,22,23,24,26)
- Synonyms
- N-(6,8-DIFLUORO-2-METHYL-4-QUINOLINYL)-N'-[4-(DIMETHYLAMINO)PHENYL]UREA|SB408124|SB-408124|1-[6,8-bis(fluoranyl)-2-me...
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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.