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
- R-(+)-NicotineCAS: 25162-00-9 Formula: C10H14N2 Molecular Weight: 162.23● In Stock — US warehouse, ships to EU* Item #: R333277View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 3-[(2R)-1-methylpyrrolidin-2-yl]pyridine
- SMILES
- CN1CCCC1C2=CN=CC=C2
- InChIKey
- SNICXCGAKADSCV-SNVBAGLBSA-N
- InChI
- 1S/C10H14N2/c1-12-7-3-5-10(12)9-4-2-6-11-8-9/h2,4,6,8,10H,3,5,7H2,1H3/t10-/m1/s1
- Synonyms
- D-Nicotine | (+)-Nicotine | (R)-nicotine
- Raltegravir-d3, Potassium Salt◐ .Made to order · 8–12 wks Item #: R334342View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC1=NN=C(O1)C(=O)NC(C)(C)C2=NC(=C(C(=O)N2C)[O-])C(=O)NCC3=CC=C(C=C3)F.[K+]
- InChIKey
- IFUKBHBISRAZTF-NXIGQQGZSA-M
- InChI
- show more
- Raddeanin A● In Stock — US warehouse, ships to EU* Item #: R115732View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC1C(C(C(C(O1)OC2C(C(C(OC2OC3C(C(COC3OC4CCC5(C(C4(C)C)CCC6(C5CC=C7C6(CCC8(C7CC(CC8)(C)C)C(=O)O)C)C)C)O)O)CO)O)O)O)O)O
- InChIKey
- VQQGPFFHGWNIGX-PPCHTBMASA-N
- InChI
- show more
- Synonyms
- NSC 382873 | HY-N0819 | s9262 | Isolate from Anemone raddeana regel | AC-35091 | CCG-270563 | AKOS030573663 | Raddean...
- Rac Equol-d4, (mixture of diastereomers)CAS: 1216469-13-4 Formula: C15H10D4O3 Molecular Weight: 246.29◐ .Made to order · 8–12 wks Item #: R334638View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2,3,4,4-tetradeuterio-3-(4-hydroxyphenyl)-2H-chromen-7-ol
- SMILES
- C1C(COC2=C1C=CC(=C2)O)C3=CC=C(C=C3)O
- InChIKey
- ADFCQWZHKCXPAJ-YHBSYLJLSA-N
- InChI
- 1S/C15H14O3/c16-13-4-1-10(2-5-13)12-7-11-3-6-14(17)8-15(11)18-9-12/h1-6,8,12,16-17H,7,9H2/i7D2,9D,12D
- Robenidine HydrochlorideCAS: 25875-50-7 EC Number: 247-307-8 PubChem CID: 16212175 Formula: C15H13Cl2N5·HCl Molecular Weight: 370.66● In Stock — US warehouse, ships to EU* Item #: R336887View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1,2-bis[(E)-(4-chlorophenyl)methylideneamino]guanidine;hydrochloride
- SMILES
- C1=CC(=CC=C1C=NNC(=NN=CC2=CC=C(C=C2)Cl)N)Cl.Cl
- InChIKey
- LTWIBTYLSRDGHP-HCURTGQUSA-N
- InChI
- 1S/C15H13Cl2N5.ClH/c16-13-5-1-11(2-6-13)9-19-21-15(18)22-20-10-12-3-7-14(17)8-4-12;/h1-10H,(H3,18,21,22);1H/b19-9+,20-10+;
- Synonyms
- ROBENIDINE HYDROCHLORIDE [MART.] | GUANIDINE, 1,3-BIS((p-CHLOROBENZYLIDENE)AMINO)-, MONOHYDROCHLORIDE | Robenidine hy...
- RosoxacinCAS: 40034-42-2 EC Number: 254-758-4 PubChem CID: 287180 Formula: C₁₇H₁₄N₂O₃・1/2H₂SO₄ Molecular Weight: 343.34Solid 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 #: R377691View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-ethyl-4-oxo-7-pyridin-4-ylquinoline-3-carboxylic acid
- SMILES
- CCN1C=C(C(=O)C2=C1C=C(C=C2)C3=CC=NC=C3)C(=O)O
- InChIKey
- XBPZXDSZHPDXQU-UHFFFAOYSA-N
- InChI
- 1S/C17H14N2O3/c1-2-19-10-14(17(21)22)16(20)13-4-3-12(9-15(13)19)11-5-7-18-8-6-11/h3-10H,2H2,1H3,(H,21,22)
- Synonyms
- 1-Ethyl-1,4-dihydro-4-oxo-7-(4-pyridinyl)-3-quinolinecarboxylic Acid Hemisulfate | Acrosoxacin Hemisulfate | Eracin H...
- Rosuvastatin LactoneCAS: 503610-43-3 EC Number: 836-302-1 PubChem CID: 29918986 Formula: C22H26FN3O5S Molecular Weight: 463.52● In Stock — US warehouse, ships to EU* Item #: R343102View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-[4-(4-fluorophenyl)-5-[(E)-2-[(2S,4R)-4-hydroxy-6-oxooxan-2-yl]ethenyl]-6-propan-2-ylpyrimidin-2-yl]-N-methylmethanesulfonamide
- SMILES
- CC(C)C1=NC(=NC(=C1C=CC2CC(CC(=O)O2)O)C3=CC=C(C=C3)F)N(C)S(=O)(=O)C
- InChIKey
- SOEGVMSNJOCVHT-VEUZHWNKSA-N
- InChI
- show more
- Synonyms
- Rosuvastatin-5S-lactone
- SP-13786Moligand™ ? 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 #: S174266View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-[2-[(2S)-2-cyano-4,4-difluoropyrrolidin-1-yl]-2-oxoethyl]quinoline-4-carboxamide
- SMILES
- C1C(N(CC1(F)F)C(=O)CNC(=O)C2=CC=NC3=CC=CC=C23)C#N
- InChIKey
- PUOOCZVRHBHJRS-NSHDSACASA-N
- InChI
- 1S/C17H14F2N4O2/c18-17(19)7-11(8-20)23(10-17)15(24)9-22-16(25)13-5-6-21-14-4-2-1-3-12(13)14/h1-6,11H,7,9-10H2,(H,22,25)/t11-/m0/s1
- Synonyms
- AKOS027423971 | EX-A2803 | N-[2-[(2S)-2-Cyano-4,4-difluoro-1-pyrrolidinyl]-2-oxoethyl]-4-quinolinecarboxamide | ZB149...
- SDPD-PEG8-NHS● In Stock — US warehouse, ships to EU* Item #: S166724View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- C1CC(=O)N(C1=O)OC(=O)CCOCCOCCOCCOCCOCCOCCOCCOCCNC(=O)CCSSC2=CC=CC=N2
- InChIKey
- HKFFRXQWQMCBEO-UHFFFAOYSA-N
- InChI
- show more
- Secalciferol-d6CAS: 1440957-55-0 Formula: C27D6H38O3 Molecular Weight: 422.67◐ .Made to order · 8–12 wks Item #: S334648View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC(CCC(C(C)(C)O)O)C1CCC2C1(CCCC2=CC=C3CC(CCC3=C)O)C
- InChIKey
- FCKJYANJHNLEEP-YIZZJVCQSA-N
- InChI
- show more
- Synonyms
- (24R)-Hydroxycalcidiol-d6 | 24R,25-Dihydroxyvitamin D3-d6
- ScopolinSolid 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 #: S333874View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 6-methoxy-7-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxychromen-2-one
- SMILES
- COC1=C(C=C2C(=C1)C=CC(=O)O2)OC3C(C(C(C(O3)CO)O)O)O
- InChIKey
- SGTCGCCQZOUMJJ-YMILTQATSA-N
- InChI
- 1S/C16H18O9/c1-22-9-4-7-2-3-12(18)23-8(7)5-10(9)24-16-15(21)14(20)13(19)11(6-17)25-16/h2-5,11,13-17,19-21H,6H2,1H3/t11-,13-,14+,15-,16-/m1/s1
- Synonyms
- SCHEMBL1674804 | 6-methoxy-2-oxo-2H-chromen-7-yl beta-D-glucopyranoside | AKOS032962035 | scopoletin glucoside | 7-O-...
- Senexin A● In Stock — US warehouse, ships to EU* Item #: S404102View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-(2-phenylethylamino)quinazoline-6-carbonitrile
- SMILES
- C1=CC=C(C=C1)CCNC2=NC=NC3=C2C=C(C=C3)C#N
- InChIKey
- XBJCNHGQFJFCOY-UHFFFAOYSA-N
- InChI
- 1S/C17H14N4/c18-11-14-6-7-16-15(10-14)17(21-12-20-16)19-9-8-13-4-2-1-3-5-13/h1-7,10,12H,8-9H2,(H,19,20,21)
- Synonyms
- BCP25089 | AC-33659 | AKOS028113542 | SCHEMBL16172718 | 1366002-50-7 | CCG-267196 | 4-(Phenethylamino)quinazoline-6-c...
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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.