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
- Tazarotenic acid● In Stock — US Item #: T302268View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 6-[2-(4,4-dimethyl-2,3-dihydrothiochromen-6-yl)ethynyl]pyridine-3-carboxylic acid
- SMILES
- CC1(CCSC2=C1C=C(C=C2)C#CC3=NC=C(C=C3)C(=O)O)C
- InChIKey
- IQIBKLWBVJPOQO-UHFFFAOYSA-N
- InChI
- 1S/C19H17NO2S/c1-19(2)9-10-23-17-8-4-13(11-16(17)19)3-6-15-7-5-14(12-20-15)18(21)22/h4-5,7-8,11-12H,9-10H2,1-2H3,(H,21,22)
- Synonyms
- DDBEP | 6-[2-(4,4-dimethyl-2,3-dihydro-1-benzothiopyran-6-yl)ethynyl]-3-pyridinecarboxylic acid | 6-((4,4-Dimethylthi...
- L-161,982CAS: 147776-06-5 Formula: C32H29F3N4O4S2 Molecular Weight: 654.72◐ .Made to order · 8–12 wks Item #: L274959View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-[2-[4-[[3-butyl-5-oxo-1-[2-(trifluoromethyl)phenyl]-1,2,4-triazol-4-yl]methyl]phenyl]phenyl]sulfonyl-3-methylthiophene-2-carboxamide
- SMILES
- CCCCC1=NN(C(=O)N1CC2=CC=C(C=C2)C3=CC=CC=C3S(=O)(=O)NC(=O)C4=C(C=CS4)C)C5=CC=CC=C5C(F)(F)F
- InChIKey
- MMDNKTXNUZFVKD-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- 2(5H)-Furanone, 3-(cyclopropylmethoxy)-5,5-dimethyl-4-(4-(methylsulfonyl)phenyl)- | BCP30125 | DTXSID50433324 | NCGC0...
- Kobe2602CAS: 454453-49-7 Formula: C14H9F4N5O4S Molecular Weight: 419.31● In Stock — US Item #: K275031View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-[2,6-dinitro-4-(trifluoromethyl)anilino]-3-(4-fluorophenyl)thiourea
- SMILES
- C1=CC(=CC=C1NC(=S)NNC2=C(C=C(C=C2[N+](=O)[O-])C(F)(F)F)[N+](=O)[O-])F
- InChIKey
- NNPBSITXCGPXJC-UHFFFAOYSA-N
- InChI
- 1S/C14H9F4N5O4S/c15-8-1-3-9(4-2-8)19-13(28)21-20-12-10(22(24)25)5-7(14(16,17)18)6-11(12)23(26)27/h1-6,20H,(H2,19,21,28)
- Synonyms
- 2-(2,6-dinitro-4-(trifluoromethyl)phenyl)-N-(4-fluorophenyl)hydrazinecarbothioamide
- Mivacurium chloride, Muscle-type nicotinic acetylcholine receptor antagonist≥98% mixture of isomers● In Stock — US Item #: M276285View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- bis[3-[(1R)-6,7-dimethoxy-2-methyl-1-[(3,4,5-trimethoxyphenyl)methyl]-3,4-dihydro-1H-isoquinolin-2-ium-2-yl]propyl] (E)-oct-4-enedioate;dichloride
- SMILES
- C[N+]1(CCC2=CC(=C(C=C2C1CC3=CC(=C(C(=C3)OC)OC)OC)OC)OC)CCCOC(=O)CCC=CCCC(=O)OCCC[N+]4(CCC5=CC(=C(C=C5C4CC6=CC(=C(C(=C6)OC)OC)OC)OC)OC)C.[Cl-].[Cl-]
- InChIKey
- WMSYWJSZGVOIJW-ONUALHDOSA-L
- InChI
- show more
- Synonyms
- Mivacurii chloridum [Latin] | BW-B109OU DICHLORIDE | Q27263131 | (R)-1,2,3,4-Tetrahydro-2-(3-hydroxypropyl)-6,7-dimet...
- TRPC6-PAM-C20● In Stock — US Item #: T287511View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 3-(6,7-dimethoxy-3,3-dimethyl-4H-isoquinolin-1-yl)chromen-2-one
- SMILES
- CC1(CC2=CC(=C(C=C2C(=N1)C3=CC4=CC=CC=C4OC3=O)OC)OC)C
- InChIKey
- SNICUMZYPOCXCO-UHFFFAOYSA-N
- InChI
- 1S/C22H21NO4/c1-22(2)12-14-10-18(25-3)19(26-4)11-15(14)20(23-22)16-9-13-7-5-6-8-17(13)27-21(16)24/h5-11H,12H2,1-4H3
- Synonyms
- 3-(3-,4-Dihydro-6,7-dimethoxy-3,3-dimethyl-1-isoquinolinyl)-2H-1-benzopyran-2-one
- TTP 22● In Stock — US Item #: T288468View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 3-[5-(4-methylphenyl)thieno[2,3-d]pyrimidin-4-yl]sulfanylpropanoic acid
- SMILES
- CC1=CC=C(C=C1)C2=CSC3=C2C(=NC=N3)SCCC(=O)O
- InChIKey
- RAOULLCLLOGTDA-UHFFFAOYSA-N
- InChI
- 1S/C16H14N2O2S2/c1-10-2-4-11(5-3-10)12-8-22-16-14(12)15(17-9-18-16)21-7-6-13(19)20/h2-5,8-9H,6-7H2,1H3,(H,19,20)
- Synonyms
- 3-[5-(4-methylphenyl)thieno[2,3-d]pyrimidin-4-yl]sulfanylpropanoic acid | 7EY | SCHEMBL18005845 | SR-01000009670-1 | ...
- Konjac glucomannanCAS: 37220-17-0● In Stock — US Item #: K303575View ProductPricing & Pack Sizes
Technical Identifiers
- TQS● In Stock — US Item #: T286911View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-naphthalen-1-yl-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinoline-8-sulfonamide
- SMILES
- C1C=CC2C1C(NC3=C2C=C(C=C3)S(=O)(=O)N)C4=CC=CC5=CC=CC=C54
- InChIKey
- SIZWDJIHABLBSP-UHFFFAOYSA-N
- InChI
- 1S/C22H20N2O2S/c23-27(25,26)15-11-12-21-20(13-15)17-8-4-10-19(17)22(24-21)18-9-3-6-14-5-1-2-7-16(14)18/h1-9,11-13,17,19,22,24H,10H2,(H2,23,25,26)
- Synonyms
- 3a,4,5,9b-Tetrahydro-4-(1-naphthalenyl)-3H-cyclopentan[c]quinoline-8-sulfonamide | 4-(naphthalen-1-yl)-3a,4,5,9b-tetr...
- Tegaserod maleate, Serotonin 4 (5-HT4) receptor partial agonistCAS: 189188-57-6 EC Number: 630-469-2 PubChem CID: 135413539 Formula: C20H217N5O5 Molecular Weight: 417.46● In Stock — US Item #: T168187View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (Z)-but-2-enedioic acid;1-[(E)-(5-methoxy-1H-indol-3-yl)methylideneamino]-2-pentylguanidine
- SMILES
- CCCCCN=C(N)NN=CC1=CNC2=C1C=C(C=C2)OC.C(=CC(=O)O)C(=O)O
- InChIKey
- CPDDZSSEAVLMRY-FEQFWAPWSA-N
- InChI
- show more
- Synonyms
- D02730 | SCHEMBL27215 | HYDRAZINECARBOXIMIDAMIDE, 2-((5-METHOXY-1H-INDOL-3-YL)METHYLENE)-N-PENTYL-, (2E)-, (2Z)-2-BUT...
- CCR2 antagonist 4 hydrochloride● In Stock — US Item #: T274845View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-[2-[[(3R)-1-[(4-chlorophenyl)methyl]pyrrolidin-3-yl]amino]-2-oxoethyl]-3-(trifluoromethyl)benzamide;hydrochloride
- SMILES
- C1CN(CC1NC(=O)CNC(=O)C2=CC(=CC=C2)C(F)(F)F)CC3=CC=C(C=C3)Cl.Cl
- InChIKey
- PGUQBBISBKGQDC-GMUIIQOCSA-N
- InChI
- show more
- Synonyms
- N-[2-[[(3R)-1-[(4-Chlorophenyl)methyl]-3-pyrrolidinyl]amino]-2-oxoethyl]-3-(trifluoromethyl)benzamidehydrochloride | ...
- Mizoribine, GMP synthase [glutamine-hydrolyzing] inhibitorSolid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥98%● In Stock — US Item #: M129842View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-hydroxyimidazole-4-carboxamide
- SMILES
- C1=NC(=C(N1C2C(C(C(O2)CO)O)O)O)C(=O)N
- InChIKey
- HZQDCMWJEBCWBR-UUOKFMHZSA-N
- InChI
- 1S/C9H13N3O6/c10-7(16)4-8(17)12(2-11-4)9-6(15)5(14)3(1-13)18-9/h2-3,5-6,9,13-15,17H,1H2,(H2,10,16)/t3-,5-,6-,9-/m1/s1
- Synonyms
- 4-Carbamoyl-1-beta-D-ribofuranosyl-imidazolium-5-olate | HE-69 | HMS3262E12 | Mizoribine (Bredinin) | N-Methyl-5-phen...
- Mn(5,10,15,20-tetrakis(4-chlorophenyl)porphyrin)ClCAS: 62613-31-4 Formula: C44H24Cl5MnN4 Molecular Weight: 840.89● In Stock — US Item #: M304191View 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.