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
102,623Explore 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)
19,695Find 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 (where available)—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
- NSC 207895CAS: 58131-57-0 Formula: C11H13N5O4 Molecular Weight: 279.25● In Stock — US warehouse, ships to EU* Item #: N129848View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-(4-methylpiperazin-1-yl)-7-nitro-3-oxido-2,1,3-benzoxadiazol-3-ium
- SMILES
- CN1CCN(CC1)C2=CC=C(C3=NO[N+](=C23)[O-])[N+](=O)[O-]
- InChIKey
- MWFZDJLPWDCQIL-UHFFFAOYSA-N
- InChI
- 1S/C11H13N5O4/c1-13-4-6-14(7-5-13)9-3-2-8(15(17)18)10-11(9)16(19)20-12-10/h2-3H,4-7H2,1H3
- Synonyms
- NSC 179940 | BDBM51256 | DTXSID50206858 | HY-14714 | METHYL-1-PIPERAZINYL)-7-NITRO-BENZOFURAZAN 3-OXIDE, 4-(4- | s267...
- NSC 23005 sodiumCAS: 1796596-46-7 Formula: C13H16NNaO4S Molecular Weight: 305.33● In Stock — US warehouse, ships to EU* Item #: N288766View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- sodium;4-(cyclohexylsulfamoyl)benzoate
- SMILES
- C1CCC(CC1)NS(=O)(=O)C2=CC=C(C=C2)C(=O)[O-].[Na+]
- InChIKey
- MLHFBDVMTRIQMW-UHFFFAOYSA-M
- InChI
- 1S/C13H17NO4S.Na/c15-13(16)10-6-8-12(9-7-10)19(17,18)14-11-4-2-1-3-5-11;/h6-9,11,14H,1-5H2,(H,15,16);/q;+1/p-1
- Synonyms
- 4-[(Cyclohexylamino)sulfonyl]benzoic acid sodium salt | NSC23005 Sodium
- Fmoc-(R)-3-amino-3-(3-methoxyphenyl)propionic acidCAS: 511272-32-5 Formula: C25H23NO5 Molecular Weight: 417.45● In Stock — US warehouse, ships to EU* Item #: F338002View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3R)-3-(9H-fluoren-9-ylmethoxycarbonylamino)-3-(3-methoxyphenyl)propanoic acid
- SMILES
- COC1=CC=CC(=C1)C(CC(=O)O)NC(=O)OCC2C3=CC=CC=C3C4=CC=CC=C24
- InChIKey
- SOJXDPVBOJLSIA-HSZRJFAPSA-N
- InChI
- show more
- Synonyms
- fmoc-(r)-3-amino-3-(3-methoxyphenyl)propanoic acid | (3R)-3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-(3-methoxyp...
- Fmoc-(R)-3-amino-3-(3-nitrophenyl)propionic acidCAS: 374791-04-5 Formula: C24H20N2O6 Molecular Weight: 432.43● In Stock — US warehouse, ships to EU* Item #: F338067View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3R)-3-(9H-fluoren-9-ylmethoxycarbonylamino)-3-(3-nitrophenyl)propanoic acid
- SMILES
- C1=CC=C2C(=C1)C(C3=CC=CC=C32)COC(=O)NC(CC(=O)O)C4=CC(=CC=C4)[N+](=O)[O-]
- InChIKey
- SFZOBIQWMMCMFE-JOCHJYFZSA-N
- InChI
- show more
- Synonyms
- AKOS015948834 | Fmoc-(R)-3-amino-3-(3-nitrophenyl)propionic acid | Fmoc-(R)-3-Amino-3-(3-nitro-phenyl)-propionic acid...
- Necrox-2CAS: 1120333-38-1 Formula: C25H32N4O4S2 Molecular Weight: 516.67● In Stock — US warehouse, ships to EU* Item #: N386066View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Necrosis Inhibitor | [5-(1,1-Dioxo-thiomorpholin-4-ylmethyl)-2-phenyl-1H-indol-7-yl]-(1-methanesulfonyl-piperidin-4-y...
- Nedaplatin● In Stock — US warehouse, ships to EU* Item #: N129652View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- azane;2-hydroxyacetic acid;platinum
- SMILES
- C(C(=O)O)O.N.N.[Pt]
- InChIKey
- ZAXCMPAWRCMABN-UHFFFAOYSA-N
- InChI
- 1S/C2H4O3.2H3N.Pt/c3-1-2(4)5;;;/h3H,1H2,(H,4,5);2*1H3;
- Synonyms
- Aqupla | (Glycolato-O,O')diammineplatinum(II) | cis-Diammine(glycolato)platinum(II)
- Resin epoxySolid average Mw ~700000● In Stock — US warehouse, ships to EU* Item #: R303195View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (Z)-3-chloroprop-1-en-1-ol
- SMILES
- C(C=CO)Cl
- InChIKey
- NUFHKADPPUOUFS-IWQZZHSRSA-N
- InChI
- 1S/C3H5ClO/c4-2-1-3-5/h1,3,5H,2H2/b3-1-
- Synonyms
- (Z)-3-chloroprop-1-en-1-ol | NUFHKADPPUOUFS-IWQZZHSRSA-N
- Fmoc-(S)-3-amino-3-(2-nitrophenyl)propionic acidCAS: 507472-25-5 Formula: C24H20N2O6 Molecular Weight: 432.43Solid ≥98%● In Stock — US warehouse, ships to EU* Item #: F338000View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3S)-3-(9H-fluoren-9-ylmethoxycarbonylamino)-3-(2-nitrophenyl)propanoic acid
- SMILES
- C1=CC=C2C(=C1)C(C3=CC=CC=C32)COC(=O)NC(CC(=O)O)C4=CC=CC=C4[N+](=O)[O-]
- InChIKey
- DRESTDPDCGPKNI-NRFANRHFSA-N
- InChI
- show more
- Synonyms
- Fmoc-(S)-3-amino-3-(2-nitrophenyl)propionic acid | Fmoc-(S)-3-Amino-3-(2-nitro-phenyl)-propionic acid | MFCD03428007 ...
- Fmoc-(S)-3-amino-3-(3,5-dimethoxyphenyl)propionic acid● In Stock — US warehouse, ships to EU* Item #: F338022View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3S)-3-(3,5-dimethoxyphenyl)-3-(9H-fluoren-9-ylmethoxycarbonylamino)propanoic acid
- SMILES
- COC1=CC(=CC(=C1)C(CC(=O)O)NC(=O)OCC2C3=CC=CC=C3C4=CC=CC=C24)OC
- InChIKey
- SPQPUHLSWLGXSO-DEOSSOPVSA-N
- InChI
- show more
- Synonyms
- (S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(3,5-dimethoxyphenyl)propanoic acid | DTXSID50427501 | fmoc-(s)-3...
- L-Tyrosine benzyl esterCAS: 42406-77-9 Formula: C16H17NO3 Molecular Weight: 271.3● In Stock — US warehouse, ships to EU* Item #: L354759View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- benzyl (2S)-2-amino-3-(4-hydroxyphenyl)propanoate
- SMILES
- C1=CC=C(C=C1)COC(=O)C(CC2=CC=C(C=C2)O)N
- InChIKey
- BVCTWRNVKLXEQC-HNNXBMFYSA-N
- InChI
- 1S/C16H17NO3/c17-15(10-12-6-8-14(18)9-7-12)16(19)20-11-13-4-2-1-3-5-13/h1-9,15,18H,10-11,17H2/t15-/m0/s1
- Synonyms
- Benzyl tyrosinate | (S)-Benzyl 2-amino-3-(4-hydroxyphenyl)propanoate | Benzyl 2-amino-3-(4-hydroxyphenyl)propanoate #...
- Fmoc-(R)-3-amino-3-(3-thienyl)propionic acid● In Stock — US warehouse, ships to EU* Item #: F337987View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3R)-3-(9H-fluoren-9-ylmethoxycarbonylamino)-3-thiophen-3-ylpropanoic acid
- SMILES
- C1=CC=C2C(=C1)C(C3=CC=CC=C32)COC(=O)NC(CC(=O)O)C4=CSC=C4
- InChIKey
- FQLMDOMRTRHLFX-HXUWFJFHSA-N
- InChI
- show more
- Synonyms
- fmoc-(r)-3-amino-3-(3-thienyl)propanoic acid | (3R)-3-(9H-fluoren-9-ylmethoxycarbonylamino)-3-thiophen-3-ylpropanoic ...
- Fmoc-(R)-3-amino-3-(3-trifluoromethylphenyl)propionic acid● In Stock — US warehouse, ships to EU* Item #: F337560View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3R)-3-(9H-fluoren-9-ylmethoxycarbonylamino)-3-[3-(trifluoromethyl)phenyl]propanoic acid
- SMILES
- C1=CC=C2C(=C1)C(C3=CC=CC=C32)COC(=O)NC(CC(=O)O)C4=CC(=CC=C4)C(F)(F)F
- InChIKey
- YOGSOMNKKBEWAJ-JOCHJYFZSA-N
- InChI
- show more
- Synonyms
- A50478 | AC-25358 | MFCD03428040 | (3R)-3-(9H-fluoren-9-ylmethoxycarbonylamino)-3-[3-(trifluoromethyl)phenyl]propanoi...
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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.