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
Shop by category
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
- Lapatinib (GW-572016) Ditosylate10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: L408619View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- N-(4-(3-fluorobenzyloxy)-3-chlorophenyl)-6-(5-((2-(methylsulfonyl)ethylamino)methyl)furan-2-yl)quinazolin-4-amine,di4...
- Lapatinib ditosylate monohydrate, Epidermal growth factor receptor erbB1 inhibitorCAS: 388082-78-8 EC Number: 642-915-3 PubChem CID: 11557040 Formula: C43H44ClFN4O11S3 Molecular Weight: 943.4910mM in DMSO● In Stock — US warehouse, ships to EU* Item #: L423794View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC1=CC=C(C=C1)S(=O)(=O)O.CC1=CC=C(C=C1)S(=O)(=O)O.CS(=O)(=O)CCNCC1=CC=C(O1)C2=CC3=C(C=C2)N=CN=C3NC4=CC(=C(C=C4)OCC5=CC(=CC=C5)F)Cl.O
- InChIKey
- XNRVGTHNYCNCFF-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- 388082-78-8|Lapatinib ditosylate hydrate|Tykerb|Lapatinib Ditosylate|LAPATINIB DITOSYLATE MONOHYDRATE|Tyverb|Tycerb|l...
- Lappaconite HBrCAS: 97792-45-5 EC Number: 808-132-8 PubChem CID: 51346120 Formula: C32H44N2O8·HBr Molecular Weight: 665.6210mM in DMSO● In Stock — US warehouse, ships to EU* Item #: L409001View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Aconitane-4,8,9-triol, 20-ethyl-1,14,16-trimethoxy-, 4-[2-(acetylamino)benzoate], hydrobromide (1:1), (1α,14α,16β)-
- Larotrectinib (LOXO-101) sulfate, Neurotrophic tyrosine kinase receptor inhibitorCAS: 1223405-08-0 EC Number: 185-359-2 PubChem CID: 67330085 Formula: C21H22F2N6O2.H2SO4 Molecular Weight: 526.51● In Stock — US warehouse, ships to EU* Item #: L413889View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3S)-N-[5-[(2R)-2-(2,5-difluorophenyl)pyrrolidin-1-yl]pyrazolo[1,5-a]pyrimidin-3-yl]-3-hydroxypyrrolidine-1-carboxamide;sulfuric acid
- SMILES
- C1CC(N(C1)C2=NC3=C(C=NN3C=C2)NC(=O)N4CCC(C4)O)C5=C(C=CC(=C5)F)F.OS(=O)(=O)O
- InChIKey
- PXHANKVTFWSDSG-QLOBERJESA-N
- InChI
- show more
- Synonyms
- 2-[4-(2-sulfonatoethyl)piperazine-1,4-diium-1-yl]ethanesulfonate | AC-30671 | LOXO-101 (sulfate) | MS-29743 | D11138 ...
- Latamoxef sodium◐ .Made to order · 8–12 wks Item #: L413207View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- [Na+].[Na+].COC1(NC(=O)C(C([O-])=O)C2=CC=C(O)C=C2)C3OCC(=C(N3C1=O)C([O-])=O)CSC4=NN=N[N]4C
- Synonyms
- Moxalactam Disodium | FestamoxinLy | Shiomarin | Ly 127935 | 6059 S
- Lavendustin BLiquid Moligand™ ? 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 #: L421080View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 5-[bis[(2-hydroxyphenyl)methyl]amino]-2-hydroxybenzoic acid
- SMILES
- C1=CC=C(C(=C1)CN(CC2=CC=CC=C2O)C3=CC(=C(C=C3)O)C(=O)O)O
- InChIKey
- RTYOLBQXFXYMKY-UHFFFAOYSA-N
- InChI
- 1S/C21H19NO5/c23-18-7-3-1-5-14(18)12-22(13-15-6-2-4-8-19(15)24)16-9-10-20(25)17(11-16)21(26)27/h1-11,23-25H,12-13H2,(H,26,27)
- Synonyms
- BDBM50025606 | DTXSID40154854 | N17046 | BCP20779 | N,N-bis(2'-Hydroxybenzyl)-3-aminosalicylic acid | CCG-208626 | HY...
- Lapaquistat acetate (TAK-475), Squalene synthetase inhibitorCAS: 189060-13-7 Formula: C33H41ClN2O9 Molecular Weight: 645.14Solid 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 #: L333466View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-[1-[2-[(3R,5S)-1-(3-acetyloxy-2,2-dimethylpropyl)-7-chloro-5-(2,3-dimethoxyphenyl)-2-oxo-5H-4,1-benzoxazepin-3-yl]acetyl]piperidin-4-yl]acetic acid
- SMILES
- CC(=O)OCC(C)(C)CN1C2=C(C=C(C=C2)Cl)C(OC(C1=O)CC(=O)N3CCC(CC3)CC(=O)O)C4=C(C(=CC=C4)OC)OC
- InChIKey
- CMLUGNQVANVZHY-POURPWNDSA-N
- InChI
- show more
- Synonyms
- 2-(1-(2-((3R,5S)-1-(3-acetoxy-2,2-dimethylpropyl)-7-chloro-5-(2,3-dimethoxyphenyl)-2-oxo-1,2,3,5-tetrahydrobenzo[e][1...
- Larotaxel, Tubulin stabiliserCAS: 156294-36-9 Formula: C45H53NO14 Molecular Weight: 831.9● In Stock — US warehouse, ships to EU* Item #: L354288View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC1=C2C(C(=O)C34CC3CC5C(C4C(C(C2(C)C)(CC1OC(=O)C(C(C6=CC=CC=C6)NC(=O)OC(C)(C)C)O)O)OC(=O)C7=CC=CC=C7)(CO5)OC(=O)C)OC(=O)C
- InChIKey
- DXOJIXGRFSHVKA-BZVZGCBYSA-N
- InChI
- show more
- Synonyms
- [(1S,2S,3R,4S,7R,9S,11R,13R,16S)-4,13-diacetyloxy-1-hydroxy-16-[(2R,3S)-2-hydroxy-3-[(2-methylpropan-2-yl)oxycarbonyl...
- Lead ionophore IVCAS: 145237-46-3 Formula: C60H84N4O4S4 Molecular Weight: 1053.59◐ .Made to order · 8–12 wks Item #: L346791View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC(C)(C)C1=CC2=C(C(=C1)CC3=CC(=CC(=C3OCC(=S)N(C)C)CC4=CC(=CC(=C4OCC(=S)N(C)C)CC5=C(C(=CC(=C5)C(C)(C)C)C2)OCC(=S)N(C)C)C(C)(C)C)C(C)(C)C)OCC(=S)N(C)C
- InChIKey
- CDVPPFVKRDRQTO-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- tert-Butylcalix[4]arene-tetrakis(N,N-dimethylthioacetamide)
- Lenalidomide (CC-5013), CRL4(CRBN) E3 ubiquitin ligase inhibitorMoligand™ ? 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 #: L408116View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- 3-(4-amino-1-oxoisoindolin-2-yl)piperidine-2,6-dione
- 3-(4-Bromo-1-oxoisoindolin-2-yl)piperidine-2,6-dioneCAS: 2093387-36-9 Formula: C13H11BrN2O3 Molecular Weight: 323.14● In Stock — US warehouse, ships to EU* Item #: L412677View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 3-(7-bromo-3-oxo-1H-isoindol-2-yl)piperidine-2,6-dione
- SMILES
- C1CC(=O)NC(=O)C1N2CC3=C(C2=O)C=CC=C3Br
- InChIKey
- SCZFMUWTABGOGF-UHFFFAOYSA-N
- InChI
- 1S/C13H11BrN2O3/c14-9-3-1-2-7-8(9)6-16(13(7)19)10-4-5-11(17)15-12(10)18/h1-3,10H,4-6H2,(H,15,17,18)
- Synonyms
- Lenalidomide-Br|3-(7-bromo-3-oxo-1H-isoindol-2-yl)piperidine-2,6-dione
- Ledipasvir acetone10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: L421623View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC(C)C(C(=O)N1CC2(CC2)CC1C3=NC=C(N3)C4=CC5=C(C=C4)C6=C(C5(F)F)C=C(C=C6)C7=CC8=C(C=C7)N=C(N8)C9C1CCC(C1)N9C(=O)C(C(C)C)NC(=O)OC)NC(=O)OC.CC(=O)C
- InChIKey
- FJPWYOHJVGOKNZ-NDANSHMASA-N
- InChI
- show more
- Synonyms
- AKOS030524068 | I11799 | Ledipasvir acetone | UNII-3J78ET35HX | EX-A1089 | Ledipasvir acetonate (JAN) | Carbamic acid...
Fast Shipping Same-day shipping on in-stock items
Technical Details Quality & specification info on every product page
Pack Size Options Multiple packaging sizes with pricing access from listing
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.