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
24,653Navigate 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
2,812PROTAC 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
102,662Explore 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)
19,717Find 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)
8,794Shop 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.
Popular Products
- PIK-75● In Stock — US warehouse, ships to EU* Item #: P125966View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-[(E)-(6-bromoimidazo[1,2-a]pyridin-3-yl)methylideneamino]-N,2-dimethyl-5-nitrobenzenesulfonamide;hydrochloride
- SMILES
- CC1=C(C=C(C=C1)[N+](=O)[O-])S(=O)(=O)N(C)N=CC2=CN=C3N2C=C(C=C3)Br.Cl
- InChIKey
- VOUDEIAYNKZQKM-MYHMWQFYSA-N
- InChI
- 1S/C16H14BrN5O4S.ClH/c1-11-3-5-13(22(23)24)7-15(11)27(25,26)20(2)19-9-14-8-18-16-6-4-12(17)10-21(14)16;/h3-10H,1-2H3;1H/b19-9+;
- Synonyms
- (E)-N'-((6-bromoimidazo[1,2-a]pyridin-3-yl)methylene)-N,2-dimethyl-5-nitrobenzenesulfonohydrazide hydrochloride | (E)...
- PIK-90● In Stock — US warehouse, ships to EU* Item #: P126920View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-(7,8-dimethoxy-2,3-dihydro-1H-imidazo[1,2-c]quinazolin-5-ylidene)pyridine-3-carboxamide
- SMILES
- COC1=C(C2=NC(=NC(=O)C3=CN=CC=C3)N4CCNC4=C2C=C1)OC
- InChIKey
- FCKJZIRDZMVDEM-UHFFFAOYSA-N
- InChI
- 1S/C18H17N5O3/c1-25-13-6-5-12-14(15(13)26-2)21-18(23-9-8-20-16(12)23)22-17(24)11-4-3-7-19-10-11/h3-7,10,20H,8-9H2,1-2H3
- Synonyms
- NCGC00238454-02 | NCGC00238454-10 | PIK 90 | N-(2,3-Dihydro-7,8-dimethoxyimidazo[1,2-c]quinazolin-5-yl)nicotinamide |...
- Amyloid β-Protein Fragment 25-35CAS: 131602-53-4(free basis) Formula: C45H81N13O14S(free basis) Molecular Weight: 1060.27(free basis)Solid ≥97%● In Stock — US warehouse, ships to EU* Item #: A107853View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- β-Amyloid (25-35)
- AmyltrichlorosilaneLiquid ≥97%◐ .Made to order · 8–12 wks Item #: A302168View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- trichloro(pentyl)silane
- SMILES
- CCCCC[Si](Cl)(Cl)Cl
- InChIKey
- KWDQAHIRKOXFAV-UHFFFAOYSA-N
- InChI
- 1S/C5H11Cl3Si/c1-2-3-4-5-9(6,7)8/h2-5H2,1H3
- Synonyms
- n-Amyltrichlorosilane | J-002005 | 4-04-00-04249 (Beilstein Handbook Reference) | Amyl trichlorosilane | Amyltrichlor...
- AngelicinMoligand™ ? 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 warehouse, ships to EU* Item #: A141501View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- furo[2,3-h]chromen-2-one
- SMILES
- C1=CC2=C(C=CO2)C3=C1C=CC(=O)O3
- InChIKey
- XDROKJSWHURZGO-UHFFFAOYSA-N
- InChI
- 1S/C11H6O3/c12-10-4-2-7-1-3-9-8(5-6-13-9)11(7)14-10/h1-6H
- Synonyms
- 4-Hydroxy-5-benzofuranacrylic acid gamma-lactone | A829042 | 2-Propenoic acid, 3-(4-hydroxy-5-benzofuranyl)-, delta-l...
- MNI-caged-L-glutamateCAS: 295325-62-1 Formula: C14H17N3O6 Molecular Weight: 323.3● In Stock — US warehouse, ships to EU* Item #: M286681View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2S)-2-amino-5-(4-methoxy-7-nitro-2,3-dihydroindol-1-yl)-5-oxopentanoic acid
- SMILES
- COC1=C2CCN(C2=C(C=C1)[N+](=O)[O-])C(=O)CCC(C(=O)O)N
- InChIKey
- GXIDBZKXGUNITQ-VIFPVBQESA-N
- InChI
- 1S/C14H17N3O6/c1-23-11-4-3-10(17(21)22)13-8(11)6-7-16(13)12(18)5-2-9(15)14(19)20/h3-4,9H,2,5-7,15H2,1H3,(H,19,20)/t9-/m0/s1
- Synonyms
- 4-Methoxy-7-nitroindolinyl-L-glutamate | (2S)-2-amino-5-(4-methoxy-7-nitro-2,3-dihydroindol-1-yl)-5-oxopentanoic acid...
- Antazoline Hydrochloride● In Stock — US warehouse, ships to EU* Item #: A124055View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-benzyl-N-(4,5-dihydro-1H-imidazol-2-ylmethyl)aniline;hydrochloride
- SMILES
- C1CN=C(N1)CN(CC2=CC=CC=C2)C3=CC=CC=C3.Cl
- InChIKey
- SWKDMSRRIBZZAY-UHFFFAOYSA-N
- InChI
- 1S/C17H19N3.ClH/c1-3-7-15(8-4-1)13-20(14-17-18-11-12-19-17)16-9-5-2-6-10-16;/h1-10H,11-14H2,(H,18,19);1H
- Synonyms
- 2-(N-Benzylanilino)methyl-2-imidazoline, hydrochloride | 2-(N-Benzylanilinomethyl)-2-imidazoline hydrochloride | Anta...
- MMP-3 Inhibitor acetateSolid 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 warehouse, ships to EU* Item #: M341449View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC(C)C(C(=O)N1CCCC1C(=O)NC(CC(=O)N)C(=O)O)NC(=O)CNC(=O)C(CS)NC(=O)C(CCCN=C(N)N)NC(=O)C
- InChIKey
- ZXUWPKKFLLKPSR-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- MMP-3 inhibitor peptide | Ac-RCGVPD-NH2 | Matrix Metalloproteinase-3 Inhibitor | Stromelysin-1 inhibitor
- Antipyrine, Cyclooxygenase-1 inhibitorSolid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. CP ? Chemically Pure grade — moderate purity above technical grade but below analytical. Use for general lab reactions where ultra-low impurities aren't critical. ≥98%● In Stock — US warehouse, ships to EU* Item #: A110659View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1,5-dimethyl-2-phenylpyrazol-3-one
- SMILES
- CC1=CC(=O)N(N1C)C2=CC=CC=C2
- InChIKey
- VEQOALNAAJBPNY-UHFFFAOYSA-N
- InChI
- 1S/C11H12N2O/c1-9-8-11(14)13(12(9)2)10-6-4-3-5-7-10/h3-8H,1-2H3
- Synonyms
- PHENAZONE [EP IMPURITY] | Prestwick1_000029 | BPBio1_000107 | PHENAZONE [MART.] | Prestwick2_000029 | Spectrum_000058...
- 5-Trifluoromethyl-1H-benzoimidazole-2-carboxylic acid◐ .Made to order · 8–12 wks Item #: T339823View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 6-(trifluoromethyl)-1H-benzimidazole-2-carboxylic acid
- SMILES
- C1=CC2=C(C=C1C(F)(F)F)NC(=N2)C(=O)O
- InChIKey
- CNQZCURJVWLZKT-UHFFFAOYSA-N
- InChI
- 1S/C9H5F3N2O2/c10-9(11,12)4-1-2-5-6(3-4)14-7(13-5)8(15)16/h1-3H,(H,13,14)(H,15,16)
- Synonyms
- 1H-Benzimidazole-2-carboxylicacid,6-(trifluoromethyl)- | 5-Trifluoromethyl-1H-benzoimidazole-2-carboxylic acid | PS-6...
- Reboxetine mesylateCAS: 98769-84-7 EC Number: 638-822-2 PubChem CID: 127150 Formula: C19H23NO3·CH4O3S Molecular Weight: 409.5Solid ≥99%● In Stock — US warehouse, ships to EU* Item #: R129930View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2R)-2-[(R)-(2-ethoxyphenoxy)-phenylmethyl]morpholine;methanesulfonic acid
- SMILES
- CCOC1=CC=CC=C1OC(C2CNCCO2)C3=CC=CC=C3.CS(=O)(=O)O
- InChIKey
- CGTZMJIMMUNLQD-STYNFMPRSA-N
- InChI
- show more
- Synonyms
- FCE20124 mesylate | (+/-)-(2R*)-2-((.ALPHA.S*)-.ALPHA.-(O-ETHOXYPHENOXY)BENZYL)MORPHOLINE METHANESULPHONATE | AKOS015...
- Rec 15/2615 dihydrochloride◐ .Made to order · 8–12 wks Item #: R287945View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-[4-(4-amino-6,7-dimethoxyquinazolin-2-yl)piperazin-1-yl]-2-(2-methoxy-6-propan-2-ylphenoxy)ethanone;dihydrochloride
- SMILES
- CC(C)C1=C(C(=CC=C1)OC)OCC(=O)N2CCN(CC2)C3=NC4=CC(=C(C=C4C(=N3)N)OC)OC.Cl.Cl
- InChIKey
- XZGSTPYGKYGQLD-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- 1-(4-Amino-6,7-dimethoxy-2-quinazolinyl)-4-[[2-methoxy-6-(1-methylethyl)phenoxy]acetyl]piperazine dihydrochloride
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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.