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
- Robenidine HydrochlorideCAS: 25875-50-7 EC Number: 247-307-8 PubChem CID: 16212175 Formula: C15H13Cl2N5·HCl Molecular Weight: 370.6610mM in DMSO● In Stock — US warehouse, ships to EU* Item #: R422904View 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...
- Rosamultin● In Stock — US warehouse, ships to EU* Item #: R412887View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC1CCC2(CCC3(C(=CCC4C3(CCC5C4(CC(C(C5(C)C)O)O)C)C)C2C1(C)O)C)C(=O)OC6C(C(C(C(O6)CO)O)O)O
- InChIKey
- MLKQAGPAYHTNQQ-BRDPIYJESA-N
- InChI
- show more
- Synonyms
- [(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydropyran-2-yl] (1R,2R,4aS,6aR,6aS,6bR,8aR,10R,11R,12aR,14b...
- Rosamultin10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: R426680View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC1CCC2(CCC3(C(=CCC4C3(CCC5C4(CC(C(C5(C)C)O)O)C)C)C2C1(C)O)C)C(=O)OC6C(C(C(C(O6)CO)O)O)O
- InChIKey
- MLKQAGPAYHTNQQ-BRDPIYJESA-N
- InChI
- show more
- Synonyms
- [(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydropyran-2-yl] (1R,2R,4aS,6aR,6aS,6bR,8aR,10R,11R,12aR,14b...
- Roscovitine (CYC202), Cyclin-dependent kinase 5 inhibitorMoligand™ ? 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 #: R408306View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Seliciclib, R-roscovitine | (R)-2-(6-(benzylamino)-9-isopropyl-9H-purin-2-ylamino)butan-1-ol
- Ro 61-8048CAS: 199666-03-0 EC Number: 694-353-3 PubChem CID: 5282337 Formula: C17H15N3O6S2 Molecular Weight: 421.4510mM in DMSO● In Stock — US warehouse, ships to EU* Item #: R422429View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 3,4-dimethoxy-N-[4-(3-nitrophenyl)-1,3-thiazol-2-yl]benzenesulfonamide
- SMILES
- COC1=C(C=C(C=C1)S(=O)(=O)NC2=NC(=CS2)C3=CC(=CC=C3)[N+](=O)[O-])OC
- InChIKey
- NDPBMCKQJOZAQX-UHFFFAOYSA-N
- InChI
- 1S/C17H15N3O6S2/c1-25-15-7-6-13(9-16(15)26-2)28(23,24)19-17-18-14(10-27-17)11-4-3-5-12(8-11)20(21)22/h3-10H,1-2H3,(H,18,19)
- Synonyms
- HB0556 | Ro 61-8048, >=98% (HPLC) | EX-A805 | Ro-61-8048 | Ro61-8048 | DTXSID20415218 | Ro 61-8048 | 3,4-dimethoxy-N-...
- Roflumilast (B9302-107), Phosphodiesterase 4 inhibitorCAS: 162401-32-3 EC Number: 685-382-2 PubChem CID: 449193 Formula: C17H14Cl2F2N2O3 Molecular Weight: 403.21Moligand™ ? 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 #: R408998View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- APTA 2217, BY 217, BYK 20869 | 3-(cyclopropylmethoxy)-N-(3,5-dichloro-4-pyridinyl)-4-(difluoromethoxy)-be...
- Rolipram (ZK-62711), Inhibitor of phosphodiesterase 4A;Inhibitor of phosphodiesterase 4B;Inhibitor of phosphodiesterase 4C;Inhibitor of phosphodiesterase 4DMoligand™ ? 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 #: R408046View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- SB 95952 | 4-(3-(cyclopentyloxy)-4-methoxyphenyl)pyrrolidin-2-one
- Romidepsin (FK228, Depsipeptide), Histone deacetylase inhibitorCAS: 128517-07-7 EC Number: 686-179-1 PubChem CID: 5352062 Formula: C24H36N4O6S2 Molecular Weight: 540.7Moligand™ ? 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 #: R407967View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- FR 901228, NSC 630176 | Cyclo[(2Z)-2-amino-2-butenoyl-L-valyl-(3S,4E)-3-hydroxy-7-mercapto-4-heptenoyl-D-valyl-D-cyst...
- RonidazoleLiquid Moligand™ ? 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 #: R408652View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- 1H-Imidazole-2-methanol, 1-methyl-5-nitro-, 2-carbamate
- Ropinirole HCl, D2-like dopamine receptor agonistCAS: 91374-20-8 EC Number: 635-615-9 PubChem CID: 68727 Formula: C16H24N2O.HCl Molecular Weight: 296.8410mM in DMSO● In Stock — US warehouse, ships to EU* Item #: R408175View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- SKF-101468A | 4-(2-(dipropylamino)ethyl)indolin-2-one hydrochloride
- Ropivacaine HCl, Sodium channel alpha subunit blocker10mM in DMSO◐ .Made to order · 8–12 wks Item #: R408524View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- LEA-103 HCl | 2-Piperidinecarboxamide, N-(2,6-dimethylphenyl)-1-propyl-, hydrochloride (1:1), (2S)-
- Ropivacaine hydrochloride, Sodium channel alpha subunit blocker● In Stock — US warehouse, ships to EU* Item #: R413090View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2S)-N-(2,6-dimethylphenyl)-1-propylpiperidine-2-carboxamide;hydrochloride
- SMILES
- CCCN1CCCCC1C(=O)NC2=C(C=CC=C2C)C.Cl
- InChIKey
- NDNSIBYYUOEUSV-RSAXXLAASA-N
- InChI
- 1S/C17H26N2O.ClH/c1-4-11-19-12-6-5-10-15(19)17(20)18-16-13(2)8-7-9-14(16)3;/h7-9,15H,4-6,10-12H2,1-3H3,(H,18,20);1H/t15-;/m0./s1
- Synonyms
- MLS001401363 | NCGC00164597-02 | Phosphocholine (chloride calcium) | MFCD02102164 | Q27128599 | SCHEMBL236432 | (2S)-...
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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.