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
- Cav 2.2 blocker 1CAS: 1567335-29-8 Formula: C25H29ClN2O2 Molecular Weight: 424.96● In Stock — US warehouse, ships to EU* Item #: C412110View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 5-(4-chlorophenyl)-1-(2-methoxyphenyl)-3-(2,2,6,6-tetramethyloxan-4-yl)pyrazole
- SMILES
- CC1(CC(CC(O1)(C)C)C2=NN(C(=C2)C3=CC=C(C=C3)Cl)C4=CC=CC=C4OC)C
- InChIKey
- LDURKOGJFOYENC-UHFFFAOYSA-N
- InChI
- 1S/C25H29ClN2O2/c1-24(2)15-18(16-25(3,4)30-24)20-14-22(17-10-12-19(26)13-11-17)28(27-20)21-8-6-7-9-23(21)29-5/h6-14,18H,15-16H2,1-5H3
- Synonyms
- compound 91H-Pyrazole,5-(4-chlorophenyl)-1-(2-methoxyphenyl)-3-(tetrahydro-2,2,6,6-tetramethyl-2H-py...
- CefdinirSolid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥97%(HPLC)● In Stock — US warehouse, ships to EU* Item #: C129963View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (6R,7R)-7-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-hydroxyiminoacetyl]amino]-3-ethenyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
- SMILES
- C=CC1=C(N2C(C(C2=O)NC(=O)C(=NO)C3=CSC(=N3)N)SC1)C(=O)O
- InChIKey
- RTXOFQZKPXMALH-GHXIOONMSA-N
- InChI
- show more
- Synonyms
- (6R,7R)-7-(((2Z)-(2-AMINO-4-THIAZOLYL)(HYDROXYIMINO)ACETYL)AMINO)-3-ETHENYL-8-OXO-5-THIA-1-AZABICYCLO(4.2.0)OCT-2-ENE...
- Catechol-d4Solid ≥98 atom% D,≥98%(CP)● In Stock — US warehouse, ships to EU* Item #: C347165View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 3,4,5,6-tetradeuteriobenzene-1,2-diol
- SMILES
- C1=CC=C(C(=C1)O)O
- InChIKey
- YCIMNLLNPGFGHC-RHQRLBAQSA-N
- InChI
- 1S/C6H6O2/c7-5-3-1-2-4-6(5)8/h1-4,7-8H/i1D,2D,3D,4D
- Synonyms
- 1,2-Benzene-3,4,5,6-d4-diol | 1,2-Benzenediol-d4 | Pyrocatechol-d4 | 1,2-Dihydroxybenzene-d4 | 2-Hydroxyphenol-d4 | O...
- CatharanthineCAS: 2468-21-5 EC Number: 219-586-6 PubChem CID: 5458190 Formula: C21H24N2O2 Molecular Weight: 336.4310mM in DMSO● In Stock — US warehouse, ships to EU* Item #: C408155View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Ibogamine-18-carboxylic acid, 3,4-didehydro-, methyl ester, (2α,5β,6α,18β)-
- Catharanthine sulfate◐ .Made to order · 8–12 wks Item #: C276397View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Catharanthinesulfate
- Catharanthine tartrateCAS: 4168-17-6 Formula: C25H30N2O8 Molecular Weight: 486.51Solid ≥98%● In Stock — US warehouse, ships to EU* Item #: C329564View ProductPricing & Pack Sizes
Technical Identifiers
- Cathepsin Inhibitor 1Solid ≥99%● In Stock — US warehouse, ships to EU* Item #: C129408View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 5-tert-butyl-N-[(2S)-3-(3-chlorophenyl)-1-(cyanomethylamino)-1-oxopropan-2-yl]-2-methylpyrazole-3-carboxamide
- SMILES
- CC(C)(C)C1=NN(C(=C1)C(=O)NC(CC2=CC(=CC=C2)Cl)C(=O)NCC#N)C
- InChIKey
- MZRVIHRERYCHBL-HNNXBMFYSA-N
- InChI
- show more
- Synonyms
- 1H-Pyrazole-5-carboxamide, N-[(1S)-1-[(3-chlorophenyl)methyl]-2-[(cyanomethyl)amino]-2-oxoethyl]-3-(1,1-dimethylethyl...
- Cathepsin/Subtilisin inhibitorFormula: C26H32N3O6Cl Molecular Weight: 518.00≥98% mixture of isomers● In Stock — US warehouse, ships to EU* Item #: C385712View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Boc-VF-NHO-Bz-pCl
- CaudatinCAS: 38395-02-7 Formula: C28H42O7 Molecular Weight: 490.63● In Stock — US warehouse, ships to EU* Item #: C412877View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC(C)C(=CC(=O)OC1CC2C3(CCC(CC3=CCC2(C4(C1(C(CC4)(C(=O)C)O)C)O)O)O)C)C
- InChIKey
- VWLXIXALPNYWFH-UBHIOMQOSA-N
- InChI
- show more
- Synonyms
- CauldatinPregn-5-en-20-one,12-[[(2E)-3,4-dimethyl-1-oxo-2-pentenyl]oxy]-3,8,14,17-tetrahydroxy-,(...
- CaudatinCAS: 38395-02-7 Formula: C28H42O7 Molecular Weight: 490.6310mM in DMSO● In Stock — US warehouse, ships to EU* Item #: C423778View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC(C)C(=CC(=O)OC1CC2C3(CCC(CC3=CCC2(C4(C1(C(CC4)(C(=O)C)O)C)O)O)O)C)C
- InChIKey
- VWLXIXALPNYWFH-UBHIOMQOSA-N
- InChI
- show more
- Synonyms
- CauldatinPregn-5-en-20-one,12-[[(2E)-3,4-dimethyl-1-oxo-2-pentenyl]oxy]-3,8,14,17-tetrahydroxy-,(...
- CefazolinMoligand™ ? 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 #: C422908View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC1=NN=C(S1)SCC2=C(N3C(C(C3=O)NC(=O)CN4C=NN=N4)SC2)C(=O)O
- InChIKey
- MLYYVTUWGNIJIB-BXKDBHETSA-N
- InChI
- show more
- Synonyms
- NCGC00159465-02 | Cephazolin | CEFAZOLIN [HSDB] | Cefazoline (INN-French) | DivK1c_000014 | J01DB04 | KBio2_003114 | ...
- Cefdaloxime◐ .Made to order · 8–12 wks Item #: C346887View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- COCC1=C(N2C(C(C2=O)NC(=O)C(=NO)C3=CSC(=N3)N)SC1)C(=O)O
- InChIKey
- HOGISBSFFHDTRM-GHXIOONMSA-N
- InChI
- show more
- Synonyms
- (6R,7R)-7-{[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-(hydroxyimino)acetyl]amino}-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyc...
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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.