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
- Stylopine hydrochloride● In Stock — US warehouse, ships to EU* Item #: S414368View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 5,7,17,19-tetraoxa-13-azahexacyclo[11.11.0.02,10.04,8.015,23.016,20]tetracosa-2,4(8),9,15(23),16(20),21-hexaene;hydrochloride
- SMILES
- C1CN2CC3=C(CC2C4=CC5=C(C=C41)OCO5)C=CC6=C3OCO6.Cl
- InChIKey
- WZUQSTMUNWBERD-UHFFFAOYSA-N
- InChI
- 1S/C19H17NO4.ClH/c1-2-16-19(24-10-21-16)14-8-20-4-3-12-6-17-18(23-9-22-17)7-13(12)15(20)5-11(1)14;/h1-2,6-7,15H,3-5,8-10H2;1H
- Synonyms
- Tetrahydrocoptisine hydrochloride | Coptisine hydrochloride4H-Bis1,3-benzodioxolo[5,6-a:4',5'-g]quinolizine,6,�...
- Succinic anhydride10mM in DMSO◐ .Made to order · 8–12 wks Item #: S420546View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- oxolane-2,5-dione
- SMILES
- C1CC(=O)OC1=O
- InChIKey
- RINCXYDBBGOEEQ-UHFFFAOYSA-N
- InChI
- 1S/C4H4O3/c5-3-1-2-4(6)7-3/h1-2H2
- Synonyms
- SAA | BRN 0108441 | CAS-108-30-5 | FT-0652573 | Tox21_201179 | FT-0637061 | SMR001372026 | Oxolan-2,5-dione | STR0130...
- Substance P (TFA)CAS: 12769-48-1 Formula: C63H98N18O13S(free) Molecular Weight: 1347.6(free)● In Stock — US warehouse, ships to EU* Item #: S388990View ProductPricing & Pack Sizes
Technical Identifiers
- Sucrose Fatty Acid EsterFormula: (RCOO)nC12H14O3(OH)8-nMonoester content 20%, HLB value 3● In Stock — Germany Item #: S394768View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Fatty Acid Sucrose Ester | Saccharose Fatty Acid Ester
- SulfalozineCAS: 102-65-8 EC Number: 203-044-0 PubChem CID: 66890 Formula: C10H9ClN4O2S Molecular Weight: 284.7210mM in DMSO◐ .Made to order · 8–12 wks Item #: S420389View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-amino-N-(6-chloropyrazin-2-yl)benzenesulfonamide
- SMILES
- C1=CC(=CC=C1N)S(=O)(=O)NC2=CN=CC(=N2)Cl
- InChIKey
- QKLPUVXBJHRFQZ-UHFFFAOYSA-N
- InChI
- 1S/C10H9ClN4O2S/c11-9-5-13-6-10(14-9)15-18(16,17)8-3-1-7(12)2-4-8/h1-6H,12H2,(H,14,15)
- Synonyms
- sulfaclozine sodium;sulfachlopryrazine sodium | AKOS015896008 | Sulfaclozine sodium monohydrate | Sulphachlorpyrazine...
- Sugammadex (sodium)CAS: 343306-79-6 EC Number: 608-974-4 PubChem CID: 6918584 Formula: C72H104Na8O48S8 Molecular Weight: 2178.0110mM in Water● In Stock — US warehouse, ships to EU* Item #: S423504View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- show more
- InChIKey
- KMGKABOMYQLLDJ-VKHHSAQNSA-F
- InChI
- show more
- Synonyms
- gamma-Cyclodextrin, 6A,6B,6C,6D,6E,7F,6G,6H-octakis-S-(2-carboxyethyl)-6A,6B,6C,6D,6E,7F,6G,6H-octathio-, octasodium ...
- Sugammadex (sodium)CAS: 343306-79-6 EC Number: 608-974-4 PubChem CID: 6918584 Formula: C72H104Na8O48S8 Molecular Weight: 2178.01Solid ≥97%● In Stock — US warehouse, ships to EU* Item #: S413465View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- show more
- InChIKey
- KMGKABOMYQLLDJ-VKHHSAQNSA-F
- InChI
- show more
- Synonyms
- Org25969 | Org 25969 | Org-25969 | gamma-Cyclodextrin, 6A,6B,6C,6D,6E,7F,6G,6H-octakis-S-(2-carboxyethyl)-6A,6B,6C,6D...
- SulbactamMoligand™ ? 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 #: S409091View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- (2S,5R)-3,3-dimethyl-7-oxo-4,4-dioxide-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid
- Sulbactam sodium, Bacterial beta-lactamase TEM inhibitor10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: S409112View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- CP-45899-2 | 3,3-dimethyl-7-oxo-4,4-dioxide-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, sodium salt (1:1)
- Sulfacetamide SodiumCAS: 127-56-0 EC Number: 204-848-4 PubChem CID: 4022878 Formula: C8H9N2NaO3S · xH2O Molecular Weight: 236.2210mM in DMSO● In Stock — US warehouse, ships to EU* Item #: S408667View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Acetamide, N-[(4-aminophenyl)sulfonyl]-, sodium salt (1:1)
- Sulfacetamide sodium salt hydrateCAS: 6209-17-2 EC Number: 642-939-4 PubChem CID: 6419954 Formula: C8H11N2NaO4S Molecular Weight: 254.2410mM in DMSO● In Stock — US warehouse, ships to EU* Item #: S425142View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- sodium;acetyl-(4-aminophenyl)sulfonylazanide;hydrate
- SMILES
- CC(=O)[N-]S(=O)(=O)C1=CC=C(C=C1)N.O.[Na+]
- InChIKey
- IHCDKJZZFOUARO-UHFFFAOYSA-M
- InChI
- 1S/C8H10N2O3S.Na.H2O/c1-6(11)10-14(12,13)8-4-2-7(9)3-5-8;;/h2-5H,9H2,1H3,(H,10,11);;1H2/q;+1;/p-1
- Synonyms
- Bleph | Sulfacetamidum natricum | Sodium sulamyd | SULFACETAMIDE SODIUM COMPONENT OF FML-S | Beocid-isoptal | MLHBZVF...
- Sulfacetamide sodium salt monohydrateCAS: 6209-17-2 EC Number: 642-939-4 PubChem CID: 6419954 Formula: C8H11N2NaO4S Molecular Weight: 254.24Solid ≥98%● In Stock — US warehouse, ships to EU* Item #: S413175View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- sodium;acetyl-(4-aminophenyl)sulfonylazanide;hydrate
- SMILES
- CC(=O)[N-]S(=O)(=O)C1=CC=C(C=C1)N.O.[Na+]
- InChIKey
- IHCDKJZZFOUARO-UHFFFAOYSA-M
- InChI
- 1S/C8H10N2O3S.Na.H2O/c1-6(11)10-14(12,13)8-4-2-7(9)3-5-8;;/h2-5H,9H2,1H3,(H,10,11);;1H2/q;+1;/p-1
- Synonyms
- Bleph | Sulfacetamidum natricum | Sodium sulamyd | SULFACETAMIDE SODIUM COMPONENT OF FML-S | Beocid-isoptal | MLHBZVF...
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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.