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
102,621Explore 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
- APTO-253CAS: 916151-99-0 Formula: C22H14FN5 Molecular Weight: 367.38● In Stock — US warehouse, ships to EU* Item #: A413688View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-(5-fluoro-2-methyl-1H-indol-3-yl)-1H-imidazo[4,5-f][1,10]phenanthroline
- SMILES
- CC1=C(C2=C(N1)C=CC(=C2)F)C3=NC4=C5C=CC=NC5=C6C(=C4N3)C=CC=N6
- InChIKey
- NIRXBXIPHUTNNI-UHFFFAOYSA-N
- InChI
- 1S/C22H14FN5/c1-11-17(15-10-12(23)6-7-16(15)26-11)22-27-20-13-4-2-8-24-18(13)19-14(21(20)28-22)5-3-9-25-19/h2-10,26H,1H3,(H,27,28)
- Synonyms
- NSC789042 | NSC-789042 | A13838 | 1H-Imidazo(4,5-F)(1,10)phenanthroline, 2-(5-fluoro-2-methyl-1H-indol-3-yl)- | SCHEM...
- APTO-253CAS: 916151-99-0 Formula: C22H14FN5 Molecular Weight: 367.3810mM in DMSO● In Stock — US warehouse, ships to EU* Item #: A426917View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-(5-fluoro-2-methyl-1H-indol-3-yl)-1H-imidazo[4,5-f][1,10]phenanthroline
- SMILES
- CC1=C(C2=C(N1)C=CC(=C2)F)C3=NC4=C5C=CC=NC5=C6C(=C4N3)C=CC=N6
- InChIKey
- NIRXBXIPHUTNNI-UHFFFAOYSA-N
- InChI
- 1S/C22H14FN5/c1-11-17(15-10-12(23)6-7-16(15)26-11)22-27-20-13-4-2-8-24-18(13)19-14(21(20)28-22)5-3-9-25-19/h2-10,26H,1H3,(H,27,28)
- Synonyms
- NSC789042 | NSC-789042 | A13838 | 1H-Imidazo(4,5-F)(1,10)phenanthroline, 2-(5-fluoro-2-methyl-1H-indol-3-yl)- | SCHEM...
- AR-C 66096 tetrasodium saltCAS: 145782-74-7 Formula: C14H18F2N5Na4O12P3S Molecular Weight: 703.26◐ .Made to order · 8–12 wks Item #: A287600View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CCCSC1=NC(=C2C(=N1)N(C=N2)C3C(C(C(O3)COP(=O)([O-])OP(=O)(C(F)(F)P(=O)([O-])[O-])[O-])O)O)N.[Na+].[Na+].[Na+].[Na+]
- InChIKey
- IETVOLFQZIGNAQ-HVYRMSERSA-J
- InChI
- show more
- Synonyms
- FPL 66096, ARL 66096 | 2-(Propylthio)adenosine-5'-O-(β,γ-difluoromethylene)triphosphate tetrasodium salt
- AP-III-a4 (ENOblock)CAS: 1177827-73-4(free base) Formula: C31H44ClFN8O3 Molecular Weight: 631.1810mM in DMSO● In Stock — US warehouse, ships to EU* Item #: A420789View ProductPricing & Pack Sizes
Technical Identifiers
- AP-III-a4 (ENOblock)CAS: 1177827-73-4 Formula: C31H43FN8O3 Molecular Weight: 594.72● In Stock — US warehouse, ships to EU* Item #: A418547View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-[2-[2-(2-aminoethoxy)ethoxy]ethyl]-2-[4-[[4-(cyclohexylmethylamino)-6-[(4-fluorophenyl)methylamino]-1,3,5-triazin-2-yl]amino]phenyl]acetamide
- SMILES
- C1CCC(CC1)CNC2=NC(=NC(=N2)NCC3=CC=C(C=C3)F)NC4=CC=C(C=C4)CC(=O)NCCOCCOCCN
- InChIKey
- MOVYITHKOHMLHC-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- (Z)-N-(2-(2-(2-aminoethoxy)ethoxy)ethyl)-2-(4-(((4E,6Z)-4-((cyclohexylmethyl)imino)-6-((4-fluorobenzyl)imino)-1,4,5,6...
- AP26113-analog (ALK-IN-1)CAS: 1197958-12-5 Formula: C26H34ClN6O2P Molecular Weight: 529.0110mM in DMSO● In Stock — US warehouse, ships to EU* Item #: A408626View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- 2,4-Pyrimidinediamine, 5-chloro-N2-[4-[4-(dimethylamino)-1-piperidinyl]-2-methoxyphenyl]-N4-[2-(dimethylphosphinyl)ph...
- APD597, Agonist of GPR119CAS: 897732-93-3 Formula: C21H29N5O6S Molecular Weight: 479.55Moligand™ ? 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 #: A426734View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- propan-2-yl 4-[5-methoxy-6-[(2-methyl-6-methylsulfonylpyridin-3-yl)amino]pyrimidin-4-yl]oxypiperidine-1-carboxylate
- SMILES
- CC1=C(C=CC(=N1)S(=O)(=O)C)NC2=C(C(=NC=N2)OC3CCN(CC3)C(=O)OC(C)C)OC
- InChIKey
- WPDCHTSXOPUOII-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- 3-Hydroxy-6-nitro-7-sulfamoyl-benzo[f]quinoxalin-2-ol anion | DB12084 | 4-[6-(6-methanesulfonyl-2-methyl-pyridin-3-yl...
- APD668, Agonist of GPR119CAS: 832714-46-2 Formula: C21H24FN5O5S Molecular Weight: 477.51Moligand™ ? 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 #: A426154View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- propan-2-yl 4-[1-(2-fluoro-4-methylsulfonylphenyl)pyrazolo[3,4-d]pyrimidin-4-yl]oxypiperidine-1-carboxylate
- SMILES
- CC(C)OC(=O)N1CCC(CC1)OC2=NC=NC3=C2C=NN3C4=C(C=C(C=C4)S(=O)(=O)C)F
- InChIKey
- XTRUQJBVQBUKSQ-UHFFFAOYSA-N
- InChI
- 1S/C21H24FN5O5S/c1-13(2)31-21(28)26-8-6-14(7-9-26)32-20-16-11-25-27(19(16)23-12-24-20)18-5-4-15(10-17(18)22)33(3,29)30/h4-5,10-14H,6-9H2,1-3H3
- Synonyms
- BCP10207 | HY-Y1031A | ISOPROPYL 4-{[1-(2-FLUORO-4-METHANESULFONYLPHENYL)PYRAZOLO[3,4-D]PYRIMIDIN-4-YL]OXY}PIPERIDINE...
- AQX-016ACAS: 849669-54-1 Formula: C22H32O2 Molecular Weight: 328.5◐ .Made to order · 8–12 wks Item #: A412976View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (6aR,11aR,11bS)-4,4,6a,7,11b-pentamethyl-1,2,3,4a,5,6,11,11a-octahydrobenzo[a]fluorene-9,10-diol
- SMILES
- CC1=CC(=C(C2=C1C3(CCC4C(CCCC4(C3C2)C)(C)C)C)O)O
- InChIKey
- DTFQQAANPRPMBC-CZVICOMLSA-N
- InChI
- 1S/C22H32O2/c1-13-11-15(23)19(24)14-12-17-21(4)9-6-8-20(2,3)16(21)7-10-22(17,5)18(13)14/h11,16-17,23-24H,6-10,12H2,1-5H3/t16?,17-,21+,22-/m1/s1
- AR-4210mM in DMSO● In Stock — US warehouse, ships to EU* Item #: A408722View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- HDAC-42 | (S)-N-hydroxy-4-(3-methyl-2-phenylbutanamido)benzamide
- AR-A014418, Inhibitor of glycogen synthase kinase 3 betaMoligand™ ? 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 #: A424221View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-[(4-methoxyphenyl)methyl]-3-(5-nitro-1,3-thiazol-2-yl)urea
- SMILES
- COC1=CC=C(C=C1)CNC(=O)NC2=NC=C(S2)[N+](=O)[O-]
- InChIKey
- YAEMHJKFIIIULI-UHFFFAOYSA-N
- InChI
- 1S/C12H12N4O4S/c1-20-9-4-2-8(3-5-9)6-13-11(17)15-12-14-7-10(21-12)16(18)19/h2-5,7H,6H2,1H3,(H2,13,14,15,17)
- Synonyms
- AM803946 | GSK 3b inhibitor VIII | Q27077900 | BDBM50229962 | 1276635-87-0 | AR-A014418, >=98% (HPLC), solid | GSK-3b...
- ARS-1620, Inhibitor of KRASCAS: 1698055-85-4 Formula: C21H17ClF2N4O2 Molecular Weight: 430.84Moligand™ ? 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 #: A414126View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-[4-[6-chloro-8-fluoro-7-(2-fluoro-6-hydroxyphenyl)quinazolin-4-yl]piperazin-1-yl]prop-2-en-1-one
- SMILES
- C=CC(=O)N1CCN(CC1)C2=NC=NC3=C(C(=C(C=C32)Cl)C4=C(C=CC=C4F)O)F
- InChIKey
- ZRPZPNYZFSJUPA-UHFFFAOYSA-N
- InChI
- 1S/C21H17ClF2N4O2/c1-2-16(30)27-6-8-28(9-7-27)21-12-10-13(22)17(19(24)20(12)25-11-26-21)18-14(23)4-3-5-15(18)29/h2-5,10-11,29H,1,6-9H2
- Synonyms
- 1-[4-[(7S)-6-chloro-8-fluoro-7-(2-fluoro-6-hydroxyphenyl)-4-quinazolinyl]-1-piperazinyl]-2-Propen-�...
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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.