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
24,638Navigate 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 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 to assemble or screen PROTAC designs, with clear identifiers for efficient selection.
By Signaling Pathways
102,614Explore 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
- Madrasin2mM in DMSO◐ .Made to order · 8–12 wks Item #: M423689View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-[(7-methoxy-4-methylquinazolin-2-yl)amino]-4,5-dimethyl-1H-pyrimidin-6-one
- SMILES
- CC1=C(N=C(NC1=O)NC2=NC(=C3C=CC(=CC3=N2)OC)C)C
- InChIKey
- QQJIYKXTEMDJFM-UHFFFAOYSA-N
- InChI
- 1S/C16H17N5O2/c1-8-9(2)17-16(20-14(8)22)21-15-18-10(3)12-6-5-11(23-4)7-13(12)19-15/h5-7H,1-4H3,(H2,17,18,19,20,21,22)
- Synonyms
- DDD001075874(3H)-Pyrimidinone,2-[(7-methoxy-4-methyl-2-quinazolinyl)amino]-5,6-dimethyl-
- Madrasin● In Stock — US Item #: M412294View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-[(7-methoxy-4-methylquinazolin-2-yl)amino]-4,5-dimethyl-1H-pyrimidin-6-one
- SMILES
- CC1=C(N=C(NC1=O)NC2=NC(=C3C=CC(=CC3=N2)OC)C)C
- InChIKey
- QQJIYKXTEMDJFM-UHFFFAOYSA-N
- InChI
- 1S/C16H17N5O2/c1-8-9(2)17-16(20-14(8)22)21-15-18-10(3)12-6-5-11(23-4)7-13(12)19-15/h5-7H,1-4H3,(H2,17,18,19,20,21,22)
- Synonyms
- DDD00107587
- MSC2530818CAS: 1883423-59-3 Formula: C18H17ClN4O Molecular Weight: 340.8110mM in DMSO● In Stock — US Item #: M422298View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- [(2S)-2-(4-chlorophenyl)pyrrolidin-1-yl]-(3-methyl-2H-pyrazolo[3,4-b]pyridin-5-yl)methanone
- SMILES
- CC1=C2C=C(C=NC2=NN1)C(=O)N3CCCC3C4=CC=C(C=C4)Cl
- InChIKey
- ODRITQGYYWHQGM-INIZCTEOSA-N
- InChI
- 1S/C18H17ClN4O/c1-11-15-9-13(10-20-17(15)22-21-11)18(24)23-8-2-3-16(23)12-4-6-14(19)7-5-12/h4-7,9-10,16H,2-3,8H2,1H3,(H,20,21,22)/t16-/m0/s1
- Synonyms
- Methanone
- Macitentan (ACT 064992), Endothelin receptor, ET-A/ET-B antagonistMoligand™ ? 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 Item #: M409076View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Sulfamide, N-[5-(4-bromophenyl)-6-[2-[(5-bromo-2-pyrimidinyl)oxy]ethoxy]-4-pyrimidinyl]-N'-propyl-
- Macranthoidin A10mM in DMSO● In Stock — US Item #: M421509View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
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- InChIKey
- VUEGHZSQVJADCO-UGZFTLGKSA-N
- InChI
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- Synonyms
- Q27271506 | Macranthoidin A | CCG-270663 | Olean-12-en-28-oic acid, 3-[(O-beta-D-glucopyranosyl-(1-->3)-O-6-deoxy-alp...
- Maduramicin Ammonium SaltCAS: 84878-61-5 EC Number: 635-502-4 PubChem CID: 68595 Formula: C47H83NO17 Molecular Weight: 934.1610mM in DMSO● In Stock — US Item #: M426234View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC1CC(C(OC1C2CC(C(O2)C3(CCC(O3)C4(CCC5(O4)CC(C(C(O5)C(C)C6C(C(C(C(O6)(CC(=O)O)O)C)OC)OC)C)O)C)C)OC7CC(C(C(O7)C)OC)OC)(C)O)C.N
- InChIKey
- WQGJEAMPBSZCIF-HKSLRPGUSA-N
- InChI
- show more
- Synonyms
- BS-18177 | Kaduramicina [Spanish] | Maduramicine | HY-N7071A | D04830 | Maduramicinum | azane;2-[(2R,3S,4S,5R,6S)-6-[...
- Macbecin I◐ .Made to order · 8–12 wks Item #: M288197View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- [(4E,6Z,10Z)-13,14,17-trimethoxy-4,8,10,12,16-pentamethyl-3,20,22-trioxo-2-azabicyclo[16.3.1]docosa-1(21),4,6,10,18-pentaen-9-yl] carbamate
- SMILES
- CC1CC(C(C(C=C(C(C(C=CC=C(C(=O)NC2=CC(=O)C=C(C1OC)C2=O)C)C)OC(=O)N)C)C)OC)OC
- InChIKey
- PLTGBUPHJAKFMA-FOKZELFKSA-N
- InChI
- show more
- Synonyms
- NSC330499 | NSC-330499 | [(4E,6Z,10Z)-13,14,17-Trimethoxy-4,8,10,12,16-pentamethyl-3,20,22-trioxo-2-azabicyclo[16.3.1...
- Magnesium ionophore III（ETH 4030）CAS: 119110-38-2 Formula: C30H58N4O4 Molecular Weight: 538.81Solid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥95%● In Stock — US Item #: M346975View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N'-heptyl-N-[8-[[3-[heptyl(methyl)amino]-3-oxopropanoyl]amino]octyl]-N'-methylpropanediamide
- SMILES
- CCCCCCCN(C)C(=O)CC(=O)NCCCCCCCCNC(=O)CC(=O)N(C)CCCCCCC
- InChIKey
- MXMJPDBVBJZBCA-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- AKOS015910826 | N,N''-Octamethylene-bis(N'-heptyl-N'-methylmalonamide) | N'-heptyl-N-[8-[[3-[heptyl(methyl)amino]-3-o...
- Magnesium ionophore VIICAS: 156210-12-7 Formula: C38H60N4O8 Molecular Weight: 700.91Solid ≥98%● In Stock — US Item #: M346789View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-(1-adamantyl)-3-[16-[3-(1-adamantylamino)-3-oxopropanoyl]-1,4,10,13-tetraoxa-7,16-diazacyclooctadec-7-yl]-3-oxopropanamide
- SMILES
- C1COCCOCCN(CCOCCOCCN1C(=O)CC(=O)NC23CC4CC(C2)CC(C4)C3)C(=O)CC(=O)NC56CC7CC(C5)CC(C7)C6
- InChIKey
- IPVOJCDBVJUPRP-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- Magnesium ionophore VII | 3,3'-(1,4,10,13-Tetraoxa-7,16-diazacyclooctadecane-7,16-diyl)bis[3-oxo-N-(tricyclo[3.3.1.1~...
- Magnesium lactate dihydrateCAS: 179308-96-4 Formula: C6H14MgO8 Molecular Weight: 238.48● In Stock — US Item #: M305218View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- magnesium;2-hydroxypropanoate;dihydrate
- SMILES
- CC(C(=O)[O-])O.CC(C(=O)[O-])O.O.O.[Mg+2]
- InChIKey
- KSHMINBVGAHXNS-UHFFFAOYSA-L
- InChI
- 1S/2C3H6O3.Mg.2H2O/c2*1-2(4)3(5)6;;;/h2*2,4H,1H3,(H,5,6);;2*1H2/q;;+2;;/p-2
- Synonyms
- Magnesium lactate dihydrate|179308-96-4|Magnesium dl-lactate dihydrate|Magnesium lactate dihydrate, dl-|L(+) LACTIC A...
- Magnoflorine chlorideCAS: 6681-18-1 Formula: C20H24ClNO4 Molecular Weight: 377.86● In Stock — US Item #: M414358View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (6aS)-2,10-dimethoxy-6,6-dimethyl-5,6,6a,7-tetrahydro-4H-dibenzo[de,g]quinolin-6-ium-1,11-diol;chloride
- SMILES
- C[N+]1(CCC2=CC(=C(C3=C2C1CC4=C3C(=C(C=C4)OC)O)O)OC)C.[Cl-]
- InChIKey
- STVJLBTYWBXDBP-ZOWNYOTGSA-N
- InChI
- 1S/C20H23NO4.ClH/c1-21(2)8-7-12-10-15(25-4)20(23)18-16(12)13(21)9-11-5-6-14(24-3)19(22)17(11)18;/h5-6,10,13H,7-9H2,1-4H3,(H-,22,23);1H/t13-;/m0./s1
- Synonyms
- MS-26159 | (6aS)-2,10-dimethoxy-6,6-dimethyl-5,6,6a,7-tetrahydro-4H-dibenzo[de,g]quinolin-6-ium-1,11-diol;chloride | ...
- Magnesium ionophore IICAS: 119110-37-1 Formula: C32H62N4O4 Molecular Weight: 566.86for ion-selective electrodes● In Stock — US Item #: M346790View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-heptyl-N'-[8-[[3-[heptyl(methyl)amino]-2-methyl-3-oxopropanoyl]amino]octyl]-N,2-dimethylpropanediamide
- SMILES
- CCCCCCCN(C)C(=O)C(C)C(=O)NCCCCCCCCNC(=O)C(C)C(=O)N(C)CCCCCCC
- InChIKey
- UTFJQHTUZRJEKD-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- SCHEMBL7263809 | ETH5214 | Eth-5214 | DTXSID20922871 | Eth 5214 | N,N'-(Octane-1,8-diyl)bis{2-[heptyl(methyl)carbamoy...
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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.