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
24,635Navigate 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
- RifapentineCAS: 61379-65-5 EC Number: 262-743-9 PubChem CID: 135403821 Formula: C47H64N4O12 Molecular Weight: 877.03Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. 10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: R409193View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- MDL473 | 3-[[(4-cyclopentyl-1-piperazinyl)imino]methyl]-rifamycin
- Ripasudil (K-115) hydrochloride dihydrate, Rho-associated protein kinase inhibitor● In Stock — US warehouse, ships to EU* Item #: R413902View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-fluoro-5-[[(2S)-2-methyl-1,4-diazepan-1-yl]sulfonyl]isoquinoline;dihydrate;hydrochloride
- SMILES
- CC1CNCCCN1S(=O)(=O)C2=CC=CC3=CN=CC(=C32)F.O.O.Cl
- InChIKey
- CMDJNMACGABCKQ-XVSRHIFFSA-N
- InChI
- 1S/C15H18FN3O2S.ClH.2H2O/c1-11-8-17-6-3-7-19(11)22(20,21)14-5-2-4-12-9-18-10-13(16)15(12)14;;;/h2,4-5,9-11,17H,3,6-8H2,1H3;1H;2*1H2/t11-;;;/m0.../s1
- Synonyms
- 1H-1,4-Diazepine, 1-((4-fluoro-5-isoquinolinyl)sulfonyl)hexahydro-2-methyl-, monohydrochloride, dihydrate, (2S)- | 4-...
- Ripasudil (K-115) hydrochloride dihydrate, Rho-associated protein kinase inhibitor10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: R426690View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-fluoro-5-[[(2S)-2-methyl-1,4-diazepan-1-yl]sulfonyl]isoquinoline;dihydrate;hydrochloride
- SMILES
- CC1CNCCCN1S(=O)(=O)C2=CC=CC3=CN=CC(=C32)F.O.O.Cl
- InChIKey
- CMDJNMACGABCKQ-XVSRHIFFSA-N
- InChI
- 1S/C15H18FN3O2S.ClH.2H2O/c1-11-8-17-6-3-7-19(11)22(20,21)14-5-2-4-12-9-18-10-13(16)15(12)14;;;/h2,4-5,9-11,17H,3,6-8H2,1H3;1H;2*1H2/t11-;;;/m0.../s1
- Synonyms
- 1H-1,4-Diazepine, 1-((4-fluoro-5-isoquinolinyl)sulfonyl)hexahydro-2-methyl-, monohydrochloride, dihydrate, (2S)- | 4-...
- Ripretinib (DCC-2618), Platelet-derived growth factor receptor alpha inhibitorCAS: 1442472-39-0 EC Number: 833-454-0 PubChem CID: 71584930 Formula: C24H21BrFN5O2 Molecular Weight: 510.36Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. 10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: R408724View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Urea, N-[4-bromo-5-[1-ethyl-1,2-dihydro-7-(methylamino)-2-oxo-1,6-naphthyridin-3-yl]-2-fluorophe...
- Risedronate Sodium, Farnesyl diphosphate synthase inhibitorCAS: 115436-72-1 EC Number: 601-362-8 PubChem CID: 4194514 Formula: C7H10NNaO7P2·XH2O Molecular Weight: 305.092mM in Water● In Stock — US warehouse, ships to EU* Item #: R420731View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- sodium;hydroxy-(1-hydroxy-1-phosphono-2-pyridin-3-ylethyl)phosphinate
- SMILES
- C1=CC(=CN=C1)CC(O)(P(=O)(O)O)P(=O)(O)[O-].[Na+]
- InChIKey
- DRFDPXKCEWYIAW-UHFFFAOYSA-M
- InChI
- 1S/C7H11NO7P2.Na/c9-7(16(10,11)12,17(13,14)15)4-6-2-1-3-8-5-6;/h1-3,5,9H,4H2,(H2,10,11,12)(H2,13,14,15);/q;+1/p-1
- Synonyms
- AC-20120 | Acrel | D00942 | H11438 | Sodium trihydrogen (1-hydroxy-2-(3-pyridyl)ethylidene)diphosphonate | DRFDPXKCEW...
- Risperidone, Dopamine D2 receptor antagonistCAS: 106266-06-2 EC Number: 600-733-1 PubChem CID: 5073 Formula: C23H27FN4O2 Molecular Weight: 410.48Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. 2mM in DMSO● In Stock — US warehouse, ships to EU* Item #: R409182View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- R-64766 | 3-(2-(4-(6-fluorobenzo[d]isoxazol-3-yl)piperidin-1-yl)ethyl)-2-methyl-6,7,8,9-tetrahydropyrido[1,2-a]pyrimi...
- Rizatriptan Benzoate, Serotonin 1d (5-HT1d) receptor agonistCAS: 145202-66-0 EC Number: 604-465-6 PubChem CID: 77997 Formula: C22H25N5O2 Molecular Weight: 391.4710mM in DMSO● In Stock — US warehouse, ships to EU* Item #: R407790View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- MK-462 Benzoate | N,N-dimethyl-5-(1H-1,2,4-triazol-1-ylmethyl)-1H-indole-3-ethanamine,benzoate (1:1)
- RifaximinCAS: 80621-81-4 EC Number: 617-130-4 PubChem CID: 6436173 Formula: C43H51N3O11 Molecular Weight: 785.88Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. 10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: R408980View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- (2S,16Z,18E,20S,21S,22R,23R,24R,25S,26R,27S,28E)-25-(acetyloxy)-5,6,21,23-tetrahydroxy-27-methoxy-...
- Rimonabant (SR141716), Cannabinoid CB1 receptor antagonistCAS: 168273-06-1 EC Number: 685-399-5 PubChem CID: 104850 Formula: C22H21Cl3N4O Molecular Weight: 463.7910mM in DMSO● In Stock — US warehouse, ships to EU* Item #: R408400View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- 5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-N-(piperidin-1-yl)-1H-pyrazole-3-carboxamide
- Ritodrine HClCAS: 23239-51-2 EC Number: 245-514-8 PubChem CID: 31728 Formula: C17H21NO3·HCl Molecular Weight: 323.8110mM in DMSO● In Stock — US warehouse, ships to EU* Item #: R408588View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- NSC 291565 | (αS)-rel-4-hydroxy-α-[(1R)-1-[[2-(4-hydroxyphenyl)ethyl]amino]ethyl]-benzenemethanol, hydr...
- Rivaroxaban (BAY 59-7939), Coagulation factor X inhibitorCAS: 366789-02-8 EC Number: 685-132-2 PubChem CID: 9875401 Formula: C19H18ClN3O5S Molecular Weight: 435.88Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. 10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: R409000View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- (S)-5-chloro-N-((2-oxo-3-(4-(3-oxomorpholino)phenyl)oxazolidin-5-yl)methyl)thiophene-2-carboxamide
- Ricolinostat (ACY-1215), Histone deacetylase 6 inhibitorCAS: 1316214-52-4 Formula: C24H27N5O3 Molecular Weight: 433.5Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. 10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: R408012View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Rocilinostat | 5-Pyrimidinecarboxamide, 2-(diphenylamino)-N-[7-(hydroxyamino)-7-oxoheptyl]-
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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.