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
- Sildenafil Citrate, Phosphodiesterase 5A inhibitor10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: S408547View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- 1-[[3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxyphenyl]sulfonyl]-4-methylpiperaz...
- SilvestrolCAS: 697235-38-4 Formula: C34H38O13 Molecular Weight: 654.66◐ .Made to order · 8–12 wks Item #: S126127View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- COC1C(OC(CO1)C(CO)O)OC2=CC3=C(C(=C2)OC)C4(C(C(C(C4(O3)C5=CC=C(C=C5)OC)C6=CC=CC=C6)C(=O)OC)O)O
- InChIKey
- GVKXFVCXBFGBCD-QKDMMWSPSA-N
- InChI
- show more
- Synonyms
- 1H-Cyclopenta(b)benzofuran-2-carboxylic acid, 6-(((2S,3R,6R)-6-((1R)-1,2-dihydroxyethyl)-3-methoxy-1,4-dioxan-2-yl)ox...
- Silybin B (Silibinin B)CAS: 142797-34-0 EC Number: 106-310-3 PubChem CID: 1548994 Formula: C25H22O10 Molecular Weight: 482.44Solid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥98%◐ .Made to order · 8–12 wks Item #: S358163View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2R,3R)-3,5,7-trihydroxy-2-[(2S,3S)-3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-2,3-dihydro-1,4-benzodioxin-6-yl]-2,3-dihydrochromen-4-one
- SMILES
- COC1=C(C=CC(=C1)C2C(OC3=C(O2)C=C(C=C3)C4C(C(=O)C5=C(C=C(C=C5O4)O)O)O)CO)O
- InChIKey
- SEBFKMXJBCUCAI-WAABAYLZSA-N
- InChI
- show more
- Synonyms
- (2R,3R)-3,5,7-trihydroxy-2-((2S,3S)-3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-2,3-dihydrobenzo[b][1,4]dioxin-6-...
- Silicon(IV) 2-ethylhexanoateLiquid Nominally 75% in ethanol● In Stock — US warehouse, ships to EU* Item #: S358513View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- tris(2-ethylhexanoyloxy)silyl 2-ethylhexanoate
- SMILES
- CCCCC(CC)C(=O)O[Si](OC(=O)C(CC)CCCC)(OC(=O)C(CC)CCCC)OC(=O)C(CC)CCCC
- InChIKey
- UNKOLEUDCQIVBV-UHFFFAOYSA-N
- InChI
- 1S/C32H60O8Si/c1-9-17-21-25(13-5)29(33)37-41(38-30(34)26(14-6)22-18-10-2,39-31(35)27(15-7)23-19-11-3)40-32(36)28(16-8)24-20-12-4/h25-28H,9-24H2,1-8H3
- Synonyms
- EINECS 267-853-0 | Hexanoic acid, 2-ethyl-, tetraanhydride with silicic acid (H4SiO4) | Tetrakis(2-ethylhexanoyl) ort...
- Simetride● In Stock — US warehouse, ships to EU* Item #: S413020View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-(2-methoxy-4-propylphenoxy)-1-[4-[2-(2-methoxy-4-propylphenoxy)acetyl]piperazin-1-yl]ethanone
- SMILES
- CCCC1=CC(=C(C=C1)OCC(=O)N2CCN(CC2)C(=O)COC3=C(C=C(C=C3)CCC)OC)OC
- InChIKey
- IMOLVSPMDGCLMB-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- 1,4-Bis((2-methoxy-4-propylphenoxy)acetyl)piperazine | Q27287491 | AP 2 | CHEBI:134727 | HY-117497 | SIMETRIDE [WHO-D...
- Silmitasertib (CX-4945), Casein kinase II alpha inhibitorCAS: 1009820-21-6 Formula: C19H12ClN3O2 Molecular Weight: 349.77Moligand™ ? 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 #: S409204View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- 5-(3-chlorophenylamino)benzo[c][2,6]naphthyridine-8-carboxylic acid
- Silmitasertib (CX-4945) sodium salt● In Stock — US warehouse, ships to EU* Item #: S412499View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- sodium;5-(3-chloroanilino)benzo[c][2,6]naphthyridine-8-carboxylate
- SMILES
- C1=CC(=CC(=C1)Cl)NC2=NC3=C(C=CC(=C3)C(=O)[O-])C4=C2C=CN=C4.[Na+]
- InChIKey
- ODDAAPQSODILSN-UHFFFAOYSA-M
- InChI
- 1S/C19H12ClN3O2.Na/c20-12-2-1-3-13(9-12)22-18-15-6-7-21-10-16(15)14-5-4-11(19(24)25)8-17(14)23-18;/h1-10H,(H,22,23)(H,24,25);/q;+1/p-1
- Synonyms
- 1309357-15-0 | D83657 | sodium;5-(3-chloroanilino)benzo[c][2,6]naphthyridine-8-carboxylate | CX-4945 sodium saltCX-49...
- Silmitasertib (CX-4945) sodium salt10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: S421201View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- sodium;5-(3-chloroanilino)benzo[c][2,6]naphthyridine-8-carboxylate
- SMILES
- C1=CC(=CC(=C1)Cl)NC2=NC3=C(C=CC(=C3)C(=O)[O-])C4=C2C=CN=C4.[Na+]
- InChIKey
- ODDAAPQSODILSN-UHFFFAOYSA-M
- InChI
- 1S/C19H12ClN3O2.Na/c20-12-2-1-3-13(9-12)22-18-15-6-7-21-10-16(15)14-5-4-11(19(24)25)8-17(14)23-18;/h1-10H,(H,22,23)(H,24,25);/q;+1/p-1
- Synonyms
- 1309357-15-0 | D83657 | sodium;5-(3-chloroanilino)benzo[c][2,6]naphthyridine-8-carboxylate | CX-4945 sodium saltCX-49...
- Silodosin, Alpha-1a adrenergic receptor antagonistCAS: 160970-54-7 EC Number: 814-909-2 PubChem CID: 5312125 Formula: C25H32F3N3O4 Molecular Weight: 495.53Moligand™ ? 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 #: S408791View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- KAD 3213, KMD 3213 | 2,3-dihydro-1-(3-hydroxypropyl)-5-[(2R)-2-[[2-[2-(2,2,2-trifluoroethoxy)phenoxy]�...
- Silicic Acid Hydrate60-200 mesh◐ .Made to order · 8–12 wks Item #: S304596View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- dihydroxy(oxo)silane
- SMILES
- O[Si](=O)O
- InChIKey
- IJKVHSBPTUYDLN-UHFFFAOYSA-N
- InChI
- 1S/H2O3Si/c1-4(2)3/h1-2H
- Synonyms
- Metasilicic acid|7699-41-4|dihydroxy(oxo)silane|63231-67-4|Silicic acid (H2SiO3)|Silica acid|Bio-Sil|4OI8D3YOH1|Silic...
- Silane, Dichlorodimethyl-, Reaction Products with Silica◐ .Made to order · 8–12 wks Item #: S304386View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- dichloro(dimethyl)silane;dioxosilane
- SMILES
- C[Si](C)(Cl)Cl.O=[Si]=O
- InChIKey
- XDPCLDPCNVTDCS-UHFFFAOYSA-N
- InChI
- 1S/C2H6Cl2Si.O2Si/c1-5(2,3)4;1-3-2/h1-2H3;
- Synonyms
- 68611-44-9|Dichloro(dimethyl)silane;dioxosilane|CID 156594508
- Sinoacutine● In Stock — US warehouse, ships to EU* Item #: S414399View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (1R,9S)-3-hydroxy-4,13-dimethoxy-17-methyl-17-azatetracyclo[7.5.3.01,10.02,7]heptadeca-2(7),3,5,10,13-pentaen-12-one
- SMILES
- CN1CCC23C=C(C(=O)C=C2C1CC4=C3C(=C(C=C4)OC)O)OC
- InChIKey
- GVTRUVGBZQJVTF-ORAYPTAESA-N
- InChI
- 1S/C19H21NO4/c1-20-7-6-19-10-16(24-3)14(21)9-12(19)13(20)8-11-4-5-15(23-2)18(22)17(11)19/h4-5,9-10,13,22H,6-8H2,1-3H3/t13-,19+/m0/s1
- Synonyms
- SALUTARIDINE (-)-FORM | SALUTARIDINE (-)-FORM [MI] | MORPHINAN-7-ONE, 5,6,8,14-TETRADEHYDRO-4-HYDROXY-3,6-DIMETHOXY-1...
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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.