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
- Sulfachloropyridazine◐ .Made to order · 8–12 wks Item #: S413057View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- NC1=CC=C(C=C1)[S](=O)(=O)NC2=CC=C(Cl)N=N2
- Sulfadiazine, Bacterial dihydropteroate synthase 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 #: S408525View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- 4-amino-N-2-pyrimidinyl-benzenesulfonamide
- Sulfadiazine sodium salt, Bacterial dihydropteroate synthase inhibitorCAS: 547-32-0 EC Number: 208-919-0 PubChem CID: 15899898 Formula: C10H9N4NaO2S Molecular Weight: 272.2610mM in DMSO● In Stock — US warehouse, ships to EU* Item #: S424665View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- sodium;(4-aminophenyl)sulfonyl-pyrimidin-2-ylazanide
- SMILES
- C1=CN=C(N=C1)[N-]S(=O)(=O)C2=CC=C(C=C2)N.[Na+]
- InChIKey
- JLDCNMJPBBKAHH-UHFFFAOYSA-N
- InChI
- 1S/C10H9N4O2S.Na/c11-8-2-4-9(5-3-8)17(15,16)14-10-12-6-1-7-13-10;/h1-7H,11H2;/q-1;+1
- Synonyms
- Sodium sulfapyrimidine | ()-MonoPhos | sodium;4-amino-N-pyrimidin-2-ylbenzenesulfonamide | N(sup 1)-2-Pyrimidinylsulf...
- Sulfameter, Bacterial dihydropteroate synthase 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 #: S408940View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- 4-amino-N-(5-methoxy-2-pyrimidinyl)-benzenesulfonamide
- Sulbenicillin Sodium10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: S422981View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- disodium;(2S,5R,6R)-3,3-dimethyl-7-oxo-6-[(2-phenyl-2-sulfonatoacetyl)amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate
- SMILES
- CC1(C(N2C(S1)C(C2=O)NC(=O)C(C3=CC=CC=C3)S(=O)(=O)[O-])C(=O)[O-])C.[Na+].[Na+]
- InChIKey
- FWRNIJIOFYDBES-HCIBPFAFSA-L
- InChI
- show more
- Synonyms
- Disodium sulfobenzylpenicillin | SCHEMBL1087357 | 4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 3,3-dimethyl-7...
- Sulbenicillin Sodium● In Stock — US warehouse, ships to EU* Item #: S413273View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- disodium;(2S,5R,6R)-3,3-dimethyl-7-oxo-6-[(2-phenyl-2-sulfonatoacetyl)amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate
- SMILES
- CC1(C(N2C(S1)C(C2=O)NC(=O)C(C3=CC=CC=C3)S(=O)(=O)[O-])C(=O)[O-])C.[Na+].[Na+]
- InChIKey
- FWRNIJIOFYDBES-HCIBPFAFSA-L
- InChI
- show more
- Synonyms
- Disodium sulfobenzylpenicillin | SCHEMBL1087357 | 4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 3,3-dimethyl-7...
- Sulconazole NitrateCAS: 61318-91-0 EC Number: 624-696-6 PubChem CID: 65495 Formula: C18H15Cl3N2S·HNO3 Molecular Weight: 460.76Liquid 10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: S408216View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- 1H-Imidazole, 1-[2-[[(4-chlorophenyl)methyl]thio]-2-(2,4-dichlorophenyl)ethyl]-, nitrate (9CI)
- SulfadoxinCAS: 2447-57-6 EC Number: 219-504-9 PubChem CID: 17134 Formula: C12H14N4O4S Molecular Weight: 310.3310mM in DMSO● In Stock — US warehouse, ships to EU* Item #: S422829View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-amino-N-(5,6-dimethoxypyrimidin-4-yl)benzenesulfonamide
- SMILES
- COC1=C(N=CN=C1OC)NS(=O)(=O)C2=CC=C(C=C2)N
- InChIKey
- PJSFRIWCGOHTNF-UHFFFAOYSA-N
- InChI
- 1S/C12H14N4O4S/c1-19-10-11(14-7-15-12(10)20-2)16-21(17,18)9-5-3-8(13)4-6-9/h3-7H,13H2,1-2H3,(H,14,15,16)
- Synonyms
- SULFADOXINE|2447-57-6|Sulphadoxine|Sulforthomidine|4-amino-N-(5,6-dimethoxypyrimidin-4-yl)benzenesulfonamide|Sulfadox...
- Sulfamerazine, Bacterial dihydropteroate synthase 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 #: S408211View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- RP 2632 | 4-amino-N-(4-methylpyrimidin-2-yl)benzenesulfonamide
- Sulfamethazine, Bacterial dihydropteroate synthase 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 #: S408842View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- 4-amino-N-(4,6-dimethylpyrimidin-2-yl)benzenesulfonamide
- Sulfamethizole10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: S409270View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- 4-amino-N-(5-methyl-1,3,4-thiadiazol-2-yl)-benzenesulfonamide
- Sulfadimethoxine Sodium SaltCAS: 1037-50-9 EC Number: 213-859-3 PubChem CID: 13384041 Formula: C12H13N4NaO4S Molecular Weight: 332.3110mM in DMSO● In Stock — US warehouse, ships to EU* Item #: S420432View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- sodium;(4-aminophenyl)sulfonyl-(2,6-dimethoxypyrimidin-4-yl)azanide
- SMILES
- COC1=NC(=NC(=C1)[N-]S(=O)(=O)C2=CC=C(C=C2)N)OC.[Na+]
- InChIKey
- DQDZQHMCPDUUPC-UHFFFAOYSA-N
- InChI
- 1S/C12H13N4O4S.Na/c1-19-11-7-10(14-12(15-11)20-2)16-21(17,18)9-5-3-8(13)4-6-9;/h3-7H,13H2,1-2H3;/q-1;+1
- Synonyms
- Sulfadimethoxydiazine sodium | EN300-7406335 | Acotiamide HCl trihydrate | D08538 | s5096 | Sulfadimethoxin natrium |...
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R&D Use Only Products supplied for research and development use
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.