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
- Methyl oleateLiquid 10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: M420657View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- methyl (Z)-octadec-9-enoate
- SMILES
- CCCCCCCCC=CCCCCCCCC(=O)OC
- InChIKey
- QYDYPVFESGNLHU-KHPPLWFESA-N
- InChI
- 1S/C19H36O2/c1-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19(20)21-2/h10-11H,3-9,12-18H2,1-2H3/b11-10-
- Synonyms
- 2,3-dihydropyrane | 9-Octadecenoic acid (Z)-, methyl ester, sulfurized, copper-treated | DTXCID805811 | 1B317D43-CBCA...
- Methyl-d3 ToluenesulfonateCAS: 7575-93-1 Formula: C8H7D3O3S Molecular Weight: 189.25◐ .Made to order · 8–12 wks Item #: M333501View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- trideuteriomethyl 4-methylbenzenesulfonate
- SMILES
- CC1=CC=C(C=C1)S(=O)(=O)OC
- InChIKey
- VUQUOGPMUUJORT-BMSJAHLVSA-N
- InChI
- 1S/C8H10O3S/c1-7-3-5-8(6-4-7)12(9,10)11-2/h3-6H,1-2H3/i2D3
- Methyl-2-methyl-4-hydroxy-2H-thieno[2,3-E]-1,2-thiazine-3-carboxylate-1,1-dioxideCAS: 59804-25-0 Formula: C9H9NO5S2 Molecular Weight: 275.3● In Stock — US warehouse, ships to EU* Item #: M333788View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- methyl 4-hydroxy-2-methyl-1,1-dioxothieno[2,3-e]thiazine-3-carboxylate
- SMILES
- CN1C(=C(C2=C(S1(=O)=O)C=CS2)O)C(=O)OC
- InChIKey
- OKNMAOBDSCJUDO-UHFFFAOYSA-N
- InChI
- 1S/C9H9NO5S2/c1-10-6(9(12)15-2)7(11)8-5(3-4-16-8)17(10,13)14/h3-4,11H,1-2H3
- Synonyms
- 9-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-2,3,6,9-tetrahydro-1H-purine-2,6-dione | methyl 4-hydrox...
- Methylbenactyzine BromideCAS: 3166-62-9 Formula: C21H28NO3.Br Molecular Weight: 422.36● In Stock — US warehouse, ships to EU* Item #: M413159View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- diethyl-[2-(2-hydroxy-2,2-diphenylacetyl)oxyethyl]-methylazanium;bromide
- SMILES
- CC[N+](C)(CC)CCOC(=O)C(C1=CC=CC=C1)(C2=CC=CC=C2)O.[Br-]
- InChIKey
- DKMVJQCQTCLYIF-UHFFFAOYSA-M
- InChI
- 1S/C21H28NO3.BrH/c1-4-22(3,5-2)16-17-25-20(23)21(24,18-12-8-6-9-13-18)19-14-10-7-11-15-19;/h6-15,24H,4-5,16-17H2,1-3H3;1H/q+1;/p-1
- Synonyms
- METHYLBENACTYZIUM BROMIDE [WHO-DD] | Neo-aspamin | Q27283425 | FT-0653810 | NSC 11525 | AS-50336 | Final | Ammonium, ...
- Methylbenactyzine BromideCAS: 3166-62-9 Formula: C21H28NO3.Br Molecular Weight: 422.3610mM in DMSO● In Stock — US warehouse, ships to EU* Item #: M423293View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- diethyl-[2-(2-hydroxy-2,2-diphenylacetyl)oxyethyl]-methylazanium;bromide
- SMILES
- CC[N+](C)(CC)CCOC(=O)C(C1=CC=CC=C1)(C2=CC=CC=C2)O.[Br-]
- InChIKey
- DKMVJQCQTCLYIF-UHFFFAOYSA-M
- InChI
- 1S/C21H28NO3.BrH/c1-4-22(3,5-2)16-17-25-20(23)21(24,18-12-8-6-9-13-18)19-14-10-7-11-15-19;/h6-15,24H,4-5,16-17H2,1-3H3;1H/q+1;/p-1
- Synonyms
- METHYLBENACTYZIUM BROMIDE [WHO-DD] | Neo-aspamin | Q27283425 | FT-0653810 | NSC 11525 | AS-50336 | Final | Ammonium, ...
- Methylene diurethaneCAS: 3693-53-6 Formula: C7H14N2O4 Molecular Weight: 190.2● In Stock — US warehouse, ships to EU* Item #: M335885View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- ethyl N-[(ethoxycarbonylamino)methyl]carbamate
- SMILES
- CCOC(=O)NCNC(=O)OCC
- InChIKey
- QSPOJWMZYOMAEI-UHFFFAOYSA-N
- InChI
- 1S/C7H14N2O4/c1-3-12-6(10)8-5-9-7(11)13-4-2/h3-5H2,1-2H3,(H,8,10)(H,9,11)
- Synonyms
- bis(n-ethoxycarbonylamino)methane
- Methysergide maleateCAS: 129-49-7 EC Number: 204-950-9 PubChem CID: 5281073 Formula: C25H31N3O6 Molecular Weight: 469.5310mM in DMSO● In Stock — US warehouse, ships to EU* Item #: M421162View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (6aR,9R)-N-[(2S)-1-hydroxybutan-2-yl]-4,7-dimethyl-6,6a,8,9-tetrahydroindolo[4,3-fg]quinoline-9-carboxamide;(Z)-but-2-enedioic acid
- SMILES
- CCC(CO)NC(=O)C1CN(C2CC3=CN(C4=CC=CC(=C34)C2=C1)C)C.C(=CC(=O)O)C(=O)O
- InChIKey
- LWYXFDXUMVEZKS-ZVFOLQIPSA-N
- InChI
- show more
- Synonyms
- Methysergide maleate|129-49-7|Deseril-retard|Desernil bismaleate|Methysergide maleate salt|Methysergide bimaleate|Met...
- MethyldopateCAS: 6014-30-8 Formula: C12H17NO4 Molecular Weight: 239.27Solid 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 #: M333771View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- ethyl (2S)-2-amino-3-(3,4-dihydroxyphenyl)-2-methylpropanoate
- SMILES
- CCOC(=O)C(C)(CC1=CC(=C(C=C1)O)O)N
- InChIKey
- SVEBYYWCXTVYCR-LBPRGKRZSA-N
- InChI
- 1S/C12H17NO4/c1-3-17-11(16)12(2,13)7-8-4-5-9(14)10(15)6-8/h4-6,14-15H,3,7,13H2,1-2H3/t12-/m0/s1
- Synonyms
- alpha-methyl-L-dopa ethyl ester | alpha-Methyldopa ethyl ester | Ethyl (S)-2-amino-3-(3,4-dihydroxyphenyl)-2-methylpr...
- Methylphenylphosphinic acidCAS: 4271-13-0 Formula: C7H9O2P Molecular Weight: 156.12Solid ≥97%● In Stock — US warehouse, ships to EU* Item #: M335867View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- methyl(phenyl)phosphinic acid
- SMILES
- CP(=O)(C1=CC=CC=C1)O
- InChIKey
- RMJCJLHZCBFPDN-UHFFFAOYSA-N
- InChI
- 1S/C7H9O2P/c1-10(8,9)7-5-3-2-4-6-7/h2-6H,1H3,(H,8,9)
- Synonyms
- SCHEMBL190428 | NSC403102 | NSC-403102 | DTXSID60323126 | Oprea1_742234 | METHYLPHENYLPHOSPHINIC ACID | Boc-D-3-Thien...
- Methylprednisolone (NSC-19987), Glucocorticoid receptor agonistMoligand™ ? 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 #: M409026View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- (6α,11β)-11,17,21-trihydroxy-6-methyl-pregna-1,4-diene-3,20-dione | (6S,8S,9S,10R,11S,13S,14S,17R)-11,17...
- Methylprednisolone hemisuccinate◐ .Made to order · 8–12 wks Item #: M413532View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- CC1CC2C3CCC(O)(C(=O)COC(=O)CCC(O)=O)C3(C)CC(O)C2C4(C)C=CC(=O)C=C14
- Methylprednisolone succinate10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: M423029View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC1CC2C3CCC(C3(CC(C2C4(C1=CC(=O)C=C4)C)O)C)(C(=O)COC(=O)CCC(=O)O)O
- InChIKey
- IMBXEJJVJRTNOW-XYMSELFBSA-N
- InChI
- show more
- Synonyms
- DTXSID80183466 | METHYLPREDNISOLONE HYDROGEN SUCCINATE [MART.] | methylprednisolone-sodium-succinate | Methylpredniso...
![Methyl-2-methyl-4-hydroxy-2H-thieno[2,3-E]-1,2-thiazine-3-carboxylate-1,1-dioxide](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/M/3/M333788.png)
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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.