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
102,622Explore 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
- N-Acetyl-D-glucosamineSolid ≥98%● In Stock — US Item #: A105211View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- 2-Acetamido-2-deoxy-D-glucopyranose | D-GlcNAc
- RHPS 4 methosulfate● In Stock — US Item #: R287983View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC1=CC2=C3C(=C1)N(C4=C(C3=[N+](C5=C2C=C(C=C5)F)C)C=C(C=C4)F)C.COS(=O)(=O)[O-]
- InChIKey
- VRWGYMXWYZBBGF-UHFFFAOYSA-M
- InChI
- show more
- Synonyms
- 3,11-Difluoro-6,8,13-trimethyl-8H-quino[4,3,2,kl]acridinium methosulfate, NSC 714187, Quino[4,3,2-kl]acridinium | RHP...
- Sodium NitroprussideCAS: 14402-89-2 EC Number: 238-373-9 PubChem CID: 11963579 Formula: C5FeN6Na2O Molecular Weight: 261.92● In Stock — US Item #: S305727View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- disodium;iron(4+);nitroxyl anion;pentacyanide
- SMILES
- [C-]#N.[C-]#N.[C-]#N.[C-]#N.[C-]#N.[N-]=O.[Na+].[Na+].[Fe+4]
- InChIKey
- PECOKVKJVPMJBN-UHFFFAOYSA-N
- InChI
- 1S/5CN.Fe.NO.2Na/c5*1-2;;1-2;;/q5*-1;+4;-1;2*+1
- Synonyms
- SR-05000001550 | CCG-212464 | Sodium nitroprusside dihydrate;Sodium Nitroferricyanide(III) Dihydrate | AKOS037515480 ...
- Tertiapin LQ◐ .Made to order · 8–12 wks Item #: T276332View ProductPricing & Pack Sizes
Technical Identifiers
- Hippuric Acid- 13 C6CAS: 1163160-18-6 Formula: C313C6H9NO3 Molecular Weight: 185.13◐ .Made to order · 8–12 wks Item #: H276483View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-((1,5,6-13C3)cyclohexatrienecarbonylamino)acetic acid
- SMILES
- C1=CC=C(C=C1)C(=O)NCC(=O)O
- InChIKey
- QIAFMBKCNZACKA-QJBUZINDSA-N
- InChI
- 1S/C9H9NO3/c11-8(12)6-10-9(13)7-4-2-1-3-5-7/h1-5H,6H2,(H,10,13)(H,11,12)/i2+1,4+1,6+1,7+1,8+1,9+1
- Synonyms
- 2-(benzamido-1,2,3,4,5,6-13C6)aceticacid
- RJR 2403 oxalate◐ .Made to order · 8–12 wks Item #: R287214View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (E)-N-methyl-4-pyridin-3-ylbut-3-en-1-amine;oxalic acid
- SMILES
- CNCCC=CC1=CN=CC=C1.C(=O)(C(=O)O)O
- InChIKey
- WTIZFOAIQXMQHC-DPZBITMOSA-N
- InChI
- 1S/C10H14N2.C2H2O4/c1-11-7-3-2-5-10-6-4-8-12-9-10;3-1(4)2(5)6/h2,4-6,8-9,11H,3,7H2,1H3;(H,3,4)(H,5,6)/b5-2+;
- Synonyms
- (E)-N-METHYL-4-(3-PYRIDINYL)-3-BUTEN-1-AMINEFUMARATE | (E)-N-methyl-4-pyridin-3-ylbut-3-en-1-amine;oxalic acid | AKOS...
- Sodium Sulfanilate HydrateCAS: 123333-70-0 PubChem CID: 23672401 Formula: C6H6NNaO3S·xH2O Molecular Weight: 195.17 (anhydrous basis)● In Stock — US Item #: S161375View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- sodium;4-aminobenzenesulfonate;hydrate
- SMILES
- C1=CC(=CC=C1N)S(=O)(=O)[O-].O.[Na+]
- InChIKey
- VDGKZGAQOPUDQL-UHFFFAOYSA-M
- InChI
- 1S/C6H7NO3S.Na.H2O/c7-5-1-3-6(4-2-5)11(8,9)10;;/h1-4H,7H2,(H,8,9,10);;1H2/q;+1;/p-1
- Synonyms
- Sodium 4-Aminobenzenesulfonate Hydrate | 4-Aminobenzenesulfonic acid, sodium salt hydrate | Sulfanilic acid sodium sa...
- Sulthiame, Carbonic anhydrase inhibitor● In Stock — US Item #: S336434View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-(1,1-dioxothiazinan-2-yl)benzenesulfonamide
- SMILES
- C1CCS(=O)(=O)N(C1)C2=CC=C(C=C2)S(=O)(=O)N
- InChIKey
- HMHVCUVYZFYAJI-UHFFFAOYSA-N
- InChI
- 1S/C10H14N2O4S2/c11-18(15,16)10-5-3-9(4-6-10)12-7-1-2-8-17(12,13)14/h3-6H,1-2,7-8H2,(H2,11,15,16)
- Synonyms
- 4-(1,1-dioxothiazinan-2-yl)benzenesulfonamide | 4-(Tetrahydro-1,1-dioxido-2H-1,2-thiazin-2-yl)-benzenesulfonamide | 4...
- Tremella polysaccharideCAS: 9075-53-0 Formula:Solid Molecular weight ＜100,0000 Da; cosmetic grade● In Stock — US Item #: T399650View ProductPricing & Pack Sizes
Technical Identifiers
- Fmoc-(R)-3-amino-3-(3-fluorophenyl)propionic acidCAS: 511272-51-8 EC Number: 173-140-4 PubChem CID: 2761715 Formula: C24H20FNO4 Molecular Weight: 405.42Solid ≥95%● In Stock — US Item #: F337985View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3R)-3-(9H-fluoren-9-ylmethoxycarbonylamino)-3-(3-fluorophenyl)propanoic acid
- SMILES
- C1=CC=C2C(=C1)C(C3=CC=CC=C32)COC(=O)NC(CC(=O)O)C4=CC(=CC=C4)F
- InChIKey
- ZZERQNLGPZUNLM-JOCHJYFZSA-N
- InChI
- show more
- Synonyms
- MFCD03428032 | PS-12362 | fmoc-(R)-3-amino-3-(3-fluoro-phenyl)-propionic acid, AldrichCPR | EN300-1162994 | DTXSID803...
- Fmoc-(R,S)-3-amino-3-(1-naphthyl)propionic acidCAS: 269078-77-5 Formula: C28H23NO4 Molecular Weight: 437.5● In Stock — US Item #: F338354View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 3-(9H-fluoren-9-ylmethoxycarbonylamino)-3-naphthalen-1-ylpropanoic acid
- SMILES
- C1=CC=C2C(=C1)C=CC=C2C(CC(=O)O)NC(=O)OCC3C4=CC=CC=C4C5=CC=CC=C35
- InChIKey
- YQHVLHLQDDNYKX-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- (R,S)-Fmoc-3-amino-3-(1-naphthyl)-propionic acid
- ROX azide, 5-isomer◐ .Made to order · 8–12 wks Item #: R276338View ProductPricing & Pack Sizes
Technical Identifiers
Fast Shipping Same-day shipping on in-stock items
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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.