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
24,638Navigate 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 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 to assemble or screen PROTAC designs, with clear identifiers for efficient selection.
By Signaling Pathways
102,614Explore 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
- Chlorisondamine diiodide◐ .Made to order · 8–12 wks Item #: C286788View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- trimethyl-[2-(4,5,6,7-tetrachloro-2-methyl-1,3-dihydroisoindol-2-ium-2-yl)ethyl]azanium;diiodide
- SMILES
- C[N+]1(CC2=C(C1)C(=C(C(=C2Cl)Cl)Cl)Cl)CC[N+](C)(C)C.[I-].[I-]
- InChIKey
- FPNVAOZHQUJJJQ-UHFFFAOYSA-L
- InChI
- 1S/C14H20Cl4N2.2HI/c1-19(2,3)5-6-20(4)7-9-10(8-20)12(16)14(18)13(17)11(9)15;;/h5-8H2,1-4H3;2*1H/q+2;;/p-2
- Synonyms
- Chlorisondamine diiodide, >=98% (HPLC), white solid | trimethyl-[2-(4,5,6,7-tetrachloro-2-methyl-1,3-dihydroisoindol-...
- ChlormezanoneMoligand™ ? 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 Item #: C408113View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- 1,1-dioxide-2-(4-chlorophenyl)tetrahydro-3-methyl-4H-1,3-thiazin-4-one
- Chitosan hydrochlorideSolid Degree of deacetylation 80.0%-90.0%● In Stock — US Item #: B304452View ProductPricing & Pack Sizes
Technical Identifiers
- Chitotriose Trihydrochloride● In Stock — US Item #: C303684View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- C(C1C(C(C(C(O1)OC2C(OC(C(C2O)N)OC(C(CO)O)C(C(C=O)N)O)CO)N)O)O)O
- InChIKey
- HBAVVSYNWHLVDB-UDAFUQIYSA-N
- InChI
- show more
- Synonyms
- Chitintriose|chitotriose|41708-93-4|(2R,3R,4R,5R)-2-AMINO-4-[(2R,3R,4R,5S,6R)-3-AMINO-5-[(2S,3R,4R,5S,6R)-3-AMINO-4,5...
- ChloranololCAS: 39563-28-5 Formula: C13H19Cl2NO2 Molecular Weight: 292.20Solid ≥97%● In Stock — US Item #: C346879View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-(tert-butylamino)-3-(2,5-dichlorophenoxy)propan-2-ol
- SMILES
- CC(C)(C)NCC(COC1=C(C=CC(=C1)Cl)Cl)O
- InChIKey
- XYCMOTOFHFTUIU-UHFFFAOYSA-N
- InChI
- 1S/C13H19Cl2NO2/c1-13(2,3)16-7-10(17)8-18-12-6-9(14)4-5-11(12)15/h4-6,10,16-17H,7-8H2,1-3H3
- Synonyms
- Cloranolol | 1-(tert-Butylamino)-3-(2,5-dichlorophenoxy)-2-propanol | Cloranololum [INN-Latin] | Gyki 41099 | Tobanum...
- Chk2 inhibitorCAS: 724708-21-8 Formula: C15H15N5O2 Molecular Weight: 295.3◐ .Made to order · 8–12 wks Item #: C337162View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 5-(2-amino-4-hydroxy-1H-imidazol-5-yl)-3,4-dihydro-2H-azepino[3,4-b]indol-1-one
- SMILES
- C1CNC(=O)C2=NC3=CC=CC=C3C2=C1C4=C(N=C(N4)N)O
- InChIKey
- RZEPRPGFGRQXDI-UHFFFAOYSA-N
- InChI
- 1S/C15H13N5O2/c16-15-19-11(14(22)20-15)8-5-6-17-13(21)12-10(8)7-3-1-2-4-9(7)18-12/h1-4,22H,5-6H2,(H,17,21)(H3,16,19,20)
- Synonyms
- 5-(2-Amino-5-oxo-1,5-dihydroimidazol-4-ylidine)-3,4,5,10-2H-azepino[3,4-b]indol-1-one
- Chloride ionophore IVCAS: 187404-67-7 Formula: C33H50N4OS2 Molecular Weight: 582.91● In Stock — US Item #: C357567View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-butyl-3-[2,7-ditert-butyl-5-(butylcarbamothioylamino)-9,9-dimethylxanthen-4-yl]thiourea
- SMILES
- CCCCNC(=S)NC1=CC(=CC2=C1OC3=C(C2(C)C)C=C(C=C3NC(=S)NCCCC)C(C)(C)C)C(C)(C)C
- InChIKey
- GYGZJHGSLBVTPV-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- Chloride ionophore IV | 1-butyl-3-[2,7-ditert-butyl-5-(butylcarbamothioylamino)-9,9-dimethylxanthen-4-yl]thiourea
- Chk2 inhibitor II, Inhibitor of checkpoint kinase 2CAS: 516480-79-8 Formula: C20H14CIN3O2 Molecular Weight: 363.8Moligand™ ? 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 Item #: C424436View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-[4-(4-chlorophenoxy)phenyl]-3H-benzimidazole-5-carboxamide
- SMILES
- C1=CC(=CC=C1C2=NC3=C(N2)C=C(C=C3)C(=O)N)OC4=CC=C(C=C4)Cl
- InChIKey
- UXGJAOIJSROTTN-UHFFFAOYSA-N
- InChI
- 1S/C20H14ClN3O2/c21-14-4-8-16(9-5-14)26-15-6-1-12(2-7-15)20-23-17-10-3-13(19(22)25)11-18(17)24-20/h1-11H,(H2,22,25)(H,23,24)
- Synonyms
- Regadenoson; CVT-3146 | Chk2 Inhibitor II | BML277 | BML-277 | HMS3745A07 | NCGC00165768-02 | NSC741899 | NSC-741899 ...
- Chlorambucil, DNA 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 Item #: C423161View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-[4-[bis(2-chloroethyl)amino]phenyl]butanoic acid
- SMILES
- C1=CC(=CC=C1CCCC(=O)O)N(CCCl)CCCl
- InChIKey
- JCKYGMPEJWAADB-UHFFFAOYSA-N
- InChI
- 1S/C14H19Cl2NO2/c15-8-10-17(11-9-16)13-6-4-12(5-7-13)2-1-3-14(18)19/h4-7H,1-3,8-11H2,(H,18,19)
- Synonyms
- chlorambucil|305-03-3|Ambochlorin|Leukeran|Chloroambucil|Chloraminophen|Chlorbutin|Chloraminophene|Chlorobutine|Amboc...
- ChloramphenicolMoligand™ ? 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 Item #: C408156View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Chloromycetin | 2,2-dichloro-N-[(1R,2R)-2-hydroxy-1-(hydroxymethyl)-2-(4-nitrophenyl)ethyl]-acetamide
- ChlorhexidineLiquid 10mM in DMSO● In Stock — US Item #: C424729View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (1E)-2-[6-[[amino-[(E)-[amino-(4-chloroanilino)methylidene]amino]methylidene]amino]hexyl]-1-[amino-(4-chloroanilino)methylidene]guanidine
- SMILES
- C1=CC(=CC=C1NC(=NC(=NCCCCCCN=C(N)N=C(N)NC2=CC=C(C=C2)Cl)N)N)Cl
- InChIKey
- GHXZTYHSJHQHIJ-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- chlorhexidine|55-56-1|Rotersept|Fimeil|Hexadol|Soretol|Chlorhexidin|Chlorhexidinum|Cloresidina [DCIT]|Chlorhexidin [C...
- Chloroprocaine HCl, Sodium channel alpha subunit blocker● In Stock — US Item #: C413096View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-(diethylamino)ethyl 4-amino-2-chlorobenzoate;hydrochloride
- SMILES
- CCN(CC)CCOC(=O)C1=C(C=C(C=C1)N)Cl.Cl
- InChIKey
- SZKQYDBPUCZLRX-UHFFFAOYSA-N
- InChI
- 1S/C13H19ClN2O2.ClH/c1-3-16(4-2)7-8-18-13(17)11-6-5-10(15)9-12(11)14;/h5-6,9H,3-4,7-8,15H2,1-2H3;1H
- Synonyms
- NCGC00183273-01 | (CHLOROPROCAINE HCI | B2867 | A912305 | CHLOROPROCAINE HYDROCHLORIDE [USP-RS] | chloroprocaine hydr...
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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.