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
- Brequinar sodiumCAS: 96201-88-6 Formula: C23H14F2NO2Na Molecular Weight: 397.35● In Stock — US warehouse, ships to EU* Item #: B684682View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- sodium;6-fluoro-2-[4-(2-fluorophenyl)phenyl]-3-methylquinoline-4-carboxylate
- SMILES
- CC1=C(C2=C(C=CC(=C2)F)N=C1C3=CC=C(C=C3)C4=CC=CC=C4F)C(=O)[O-].[Na+]
- InChIKey
- PZOHOALJQOFNTB-UHFFFAOYSA-M
- InChI
- 1S/C23H15F2NO2.Na/c1-13-21(23(27)28)18-12-16(24)10-11-20(18)26-22(13)15-8-6-14(7-9-15)17-4-2-3-5-19(17)25;/h2-12H,1H3,(H,27,28);/q;+1/p-1
- Synonyms
- BRQ, DuP 785, NSC 368390|6-Fluoro-2-(2'-fluoro[1,1'-biphenyl]-4-yl)-3-methyl-4-quinolinecarboxylic acid sodium
- Polyester of aliphatic dicarboxylic acidsCAS: 150923-12-9 Formula:Hydroxy Value 120-130(mgKOH/g)● In Stock — Germany Item #: P684826View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- BASF PALAMOLL 646
- Thieno[2,3-b]pyridine-2-carboxylic acidCAS: 59944-76-2 Formula: C8H5NO2S Molecular Weight: 179.2◐ Made to order · 8–12 wks Item #: T694288View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- thieno[2,3-b]pyridine-2-carboxylic acid
- SMILES
- C1=CC2=C(N=C1)SC(=C2)C(=O)O
- InChIKey
- XGCSHAYMNOFFNA-UHFFFAOYSA-N
- InChI
- 1S/C8H5NO2S/c10-8(11)6-4-5-2-1-3-9-7(5)12-6/h1-4H,(H,10,11)
- EcabetSolid 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 #: A694125View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (1R,4aS,10aR)-1,4a-dimethyl-7-propan-2-yl-6-sulfo-2,3,4,9,10,10a-hexahydrophenanthrene-1-carboxylic acid
- SMILES
- CC(C)C1=C(C=C2C(=C1)CCC3C2(CCCC3(C)C(=O)O)C)S(=O)(=O)O
- InChIKey
- IWCWQNVIUXZOMJ-MISYRCLQSA-N
- InChI
- show more
- Synonyms
- 12-Sulfodehydroabietic acid|13-Isopropyl-12-sulfopodocarpa-8,11,13-trien-15-oic acid
- 1，3-Bis(4-chloro-3-(trifluoromethyl)phenyl)ureaSolid 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 #: B694208View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1,3-bis[4-chloro-3-(trifluoromethyl)phenyl]urea
- SMILES
- C1=CC(=C(C=C1NC(=O)NC2=CC(=C(C=C2)Cl)C(F)(F)F)C(F)(F)F)Cl
- InChIKey
- ABOVRDBEJDIBMZ-UHFFFAOYSA-N
- InChI
- 1S/C15H8Cl2F6N2O/c16-11-3-1-7(5-9(11)14(18,19)20)24-13(26)25-8-2-4-12(17)10(6-8)15(21,22)23/h1-6H,(H2,24,25,26)
- Synonyms
- N,N'-Bis[4-chloro-3-(trifluoromethyl)phenyl]urea|Flucofuron
- 2-(5-Chloro-3-methylbenzo[b]thiophen-2-yl)acetic acidCAS: 51527-19-6 EC Number: 108-316-1 PubChem CID: 68686 Formula: C11H9ClO2S Molecular Weight: 240.71Solid 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 #: A694233View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-(5-chloro-3-methyl-1-benzothiophen-2-yl)acetic acid
- SMILES
- CC1=C(SC2=C1C=C(C=C2)Cl)CC(=O)O
- InChIKey
- QNJIHQOPIPJYLU-UHFFFAOYSA-N
- InChI
- 1S/C11H9ClO2S/c1-6-8-4-7(12)2-3-9(8)15-10(6)5-11(13)14/h2-4H,5H2,1H3,(H,13,14)
- Synonyms
- Tianafac
- 2-([1，1'-Biphenyl]-4-yl)-N-(pyridin-2-yl)acetamideCAS: 51484-40-3 Formula: C19H16N2O Molecular Weight: 288.34Solid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥97%● In Stock — US warehouse, ships to EU* Item #: N695367View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-(4-phenylphenyl)-N-pyridin-2-ylacetamide
- SMILES
- C1=CC=C(C=C1)C2=CC=C(C=C2)CC(=O)NC3=CC=CC=N3
- InChIKey
- PWHROYKAGRUWDQ-UHFFFAOYSA-N
- InChI
- 1S/C19H16N2O/c22-19(21-18-8-4-5-13-20-18)14-15-9-11-17(12-10-15)16-6-2-1-3-7-16/h1-13H,14H2,(H,20,21,22)
- Synonyms
- Difenpiramide|Z-876
- Compound 48/80 (hydrochloride)Formula: C32H45N3O3 • XHCl (for trimer) Molecular Weight: 519.7◐ Made to order · 8–12 wks Item #: C707140View ProductPricing & Pack Sizes
Technical Identifiers
- 5,7-Dimethoxy-4-methyl-2H-chromen-2-oneSolid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥97%● In Stock — US warehouse, ships to EU* Item #: M697601View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 5,7-dimethoxy-4-methylchromen-2-one
- SMILES
- CC1=CC(=O)OC2=C1C(=CC(=C2)OC)OC
- InChIKey
- WFSKVHPOKPQJSU-UHFFFAOYSA-N
- InChI
- 1S/C12H12O4/c1-7-4-11(13)16-10-6-8(14-2)5-9(15-3)12(7)10/h4-6H,1-3H3
- Synonyms
- 4-Methyl-5,7-dimethoxycoumarin
- Canthin-6-oneSolid 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 #: C695264View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1,6-diazatetracyclo[7.6.1.05,16.010,15]hexadeca-3,5(16),6,8,10,12,14-heptaen-2-one
- SMILES
- C1=CC=C2C(=C1)C3=C4N2C(=O)C=CC4=NC=C3
- InChIKey
- ZERVJPYNQLONEK-UHFFFAOYSA-N
- InChI
- 1S/C14H8N2O/c17-13-6-5-11-14-10(7-8-15-11)9-3-1-2-4-12(9)16(13)14/h1-8H
- Synonyms
- 6H-Indolo[3,2,1-de][1,5]naphthyridin-6-one
- Gyrophoric acidCAS: 548-89-0 Formula: C24H20O10 Molecular Weight: 468.4Solid 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 #: G695710View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-[4-(2,4-dihydroxy-6-methylbenzoyl)oxy-2-hydroxy-6-methylbenzoyl]oxy-2-hydroxy-6-methylbenzoic acid
- SMILES
- CC1=CC(=CC(=C1C(=O)OC2=CC(=C(C(=C2)C)C(=O)OC3=CC(=C(C(=C3)C)C(=O)O)O)O)O)O
- InChIKey
- ATQPZSQVWCPVGV-UHFFFAOYSA-N
- InChI
- 1S/C24H20O10/c1-10-4-13(25)7-16(26)20(10)23(31)34-15-6-12(3)21(18(28)9-15)24(32)33-14-5-11(2)19(22(29)30)17(27)8-14/h4-9,25-28H,1-3H3,(H,29,30)
- N-benzoyl-N'-tert-butylbenzohydrazide(RH-5849 )Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥99%● In Stock — US warehouse, ships to EU* Item #: N694917View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N'-benzoyl-N'-tert-butylbenzohydrazide
- SMILES
- CC(C)(C)N(C(=O)C1=CC=CC=C1)NC(=O)C2=CC=CC=C2
- InChIKey
- NISLLQUWIJASOV-UHFFFAOYSA-N
- InChI
- 1S/C18H20N2O2/c1-18(2,3)20(17(22)15-12-8-5-9-13-15)19-16(21)14-10-6-4-7-11-14/h4-13H,1-3H3,(H,19,21)
- Synonyms
- RH-5849|1,2-Dibenzoyl-1-(tert-butyl)hydrazine
![Thieno[2,3-b]pyridine-2-carboxylic acid](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/T/6/T694288.jpg)
![2-([1，1'-Biphenyl]-4-yl)-N-(pyridin-2-yl)acetamide - Moligand™, ≥97% CAS No(51484-40-3) by Aladdin Scientific](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/n/6/n695367.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.