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
- 1,3,5-Trimethylpyrazole◐ .Made to order · 8–12 wks Item #: T413232View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- C[N]1N=C(C)C=C1C
- Synonyms
- 1,3,5-TMePz | 1,3,5-Trimethyl-1H-pyrazole
- 1,3-Di(pyridin-4-yl)benzene● In Stock — US warehouse, ships to EU* Item #: D305155View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-(3-pyridin-4-ylphenyl)pyridine
- SMILES
- C1=CC(=CC(=C1)C2=CC=NC=C2)C3=CC=NC=C3
- InChIKey
- SYGVWHHZHJNDJN-UHFFFAOYSA-N
- InChI
- 1S/C16H12N2/c1-2-15(13-4-8-17-9-5-13)12-16(3-1)14-6-10-18-11-7-14/h1-12H
- 1,3-Diacetoxy-2-(acetoxymethoxy)propaneCAS: 86357-13-3 Formula: C10H16O7 Molecular Weight: 248.23● In Stock — US warehouse, ships to EU* Item #: D304787View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- [3-acetyloxy-2-(acetyloxymethoxy)propyl] acetate
- SMILES
- CC(=O)OCC(COC(=O)C)OCOC(=O)C
- InChIKey
- DUOPMEBLLUYTNT-UHFFFAOYSA-N
- InChI
- 1S/C10H16O7/c1-7(11)14-4-10(5-15-8(2)12)17-6-16-9(3)13/h10H,4-6H2,1-3H3
- Synonyms
- [3-acetyloxy-2-(acetyloxymethoxy)propyl] acetate | 2-acetoxymethoxy-1,3-diacetoxypropane | AMY17778 | 1,3-diacetoxy-2...
- 1,3-Dicaffeoylquinic acidSolid 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 #: D414415View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (1S,3R,4R,5R)-1,3-bis[[(E)-3-(3,4-dihydroxyphenyl)prop-2-enoyl]oxy]-4,5-dihydroxycyclohexane-1-carboxylic acid
- SMILES
- C1C(C(C(CC1(C(=O)O)OC(=O)C=CC2=CC(=C(C=C2)O)O)OC(=O)C=CC3=CC(=C(C=C3)O)O)O)O
- InChIKey
- YDDUMTOHNYZQPO-PSEXTPKNSA-N
- InChI
- show more
- Synonyms
- (1S,3R,4R,5R)-1,3-bis[[(E)-3-(3,4-dihydroxyphenyl)prop-2-enoyl]oxy]-4,5-dihydroxy-cyclohexanecarboxylic acid | Spectr...
- 1,4,7,10-TetraazacyclododecaneCAS: 294-90-6 Formula: C8H20N4 Molecular Weight: 172.2710mM in DMSO● In Stock — US warehouse, ships to EU* Item #: T423047View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1,4,7,10-tetrazacyclododecane
- SMILES
- C1CNCCNCCNCCN1
- InChIKey
- QBPPRVHXOZRESW-UHFFFAOYSA-N
- InChI
- 1S/C8H20N4/c1-2-10-5-6-12-8-7-11-4-3-9-1/h9-12H,1-8H2
- Synonyms
- NSC 629374 | S4927 | T1874 | Cyclen, 97% | MLS000069489 | Q63390538 | 1,4,7,10 Tetrazacyclododecane | BP-21532 | NCGC...
- 1,4-Diaminobutane dihydrochlorideMoligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. 10mM in Water● In Stock — US warehouse, ships to EU* Item #: D423441View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- butane-1,4-diamine;dihydrochloride
- SMILES
- C(CCN)CN.Cl.Cl
- InChIKey
- XXWCODXIQWIHQN-UHFFFAOYSA-N
- InChI
- 1S/C4H12N2.2ClH/c5-3-1-2-4-6;;/h1-6H2;2*1H
- Synonyms
- 1,4-Diaminobutane*2HCl | HY-Y1781 | SCHEMBL29458 | X45SUR7RHY | 1,4-Butanediamine, hydrochloride (1:2) | NCGC00094272...
- 1-(1-Adamantyl)ethylamine hydrochloride10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: A421767View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-(1-adamantyl)ethanamine;hydrochloride
- SMILES
- CC(C12CC3CC(C1)CC(C3)C2)N.Cl
- InChIKey
- OZBDFBJXRJWNAV-UHFFFAOYSA-N
- InChI
- 1S/C12H21N.ClH/c1-8(13)12-5-9-2-10(6-12)4-11(3-9)7-12;/h8-11H,2-7,13H2,1H3;1H
- Synonyms
- Rimantadine hydrochloride|1501-84-4|Flumadine|Rimantadine HCL|Meradane|1-(1-ADAMANTYL)ETHYLAMINE HYDROCHLORIDE|EXP 12...
- 1,5-Diaminopentane Dihydrochloride10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: D421724View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- pentane-1,5-diamine;dihydrochloride
- SMILES
- C(CCN)CCN.Cl.Cl
- InChIKey
- FGNLEIGUMSBZQP-UHFFFAOYSA-N
- InChI
- 1S/C5H14N2.2ClH/c6-4-2-1-3-5-7;;/h1-7H2;2*1H
- Synonyms
- Cadaverine dihydrochloride, ~98% | CHEBI:64701 | 1,5-Pentanediamine dihydrochloride | G 641 | NSC 129885 | Cadaverine...
- 1-(11bS)-Dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-ylpyrrolidineCAS: 627528-96-5 Formula: C24H20NO2P Molecular Weight: 385.4Solid ≥95%● In Stock — US warehouse, ships to EU* Item #: S304199View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-(12,14-dioxa-13-phosphapentacyclo[13.8.0.02,11.03,8.018,23]tricosa-1(15),2(11),3,5,7,9,16,18,20,22-decaen-13-yl)pyrrolidine
- SMILES
- C1CCN(C1)P2OC3=C(C4=CC=CC=C4C=C3)C5=C(O2)C=CC6=CC=CC=C65
- InChIKey
- PEBZMIJYTLAUKZ-UHFFFAOYSA-N
- InChI
- 1S/C24H20NO2P/c1-3-9-19-17(7-1)11-13-21-23(19)24-20-10-4-2-8-18(20)12-14-22(24)27-28(26-21)25-15-5-6-16-25/h1-4,7-14H,5-6,15-16H2
- Synonyms
- 1-(11bS)-dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-yl- Pyrrolidine
- 1-(2,3-Di(thiophen-2-yl)quinoxalin-6-yl)-3-(2-methoxyethyl)ureaCAS: 508186-14-9 Formula: C20H18N4O2S2 Molecular Weight: 410.5110mM in DMSO● In Stock — US warehouse, ships to EU* Item #: D424372View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-(2,3-dithiophen-2-ylquinoxalin-6-yl)-3-(2-methoxyethyl)urea
- SMILES
- COCCNC(=O)NC1=CC2=C(C=C1)N=C(C(=N2)C3=CC=CS3)C4=CC=CS4
- InChIKey
- CTPVNWVUAGMHEJ-UHFFFAOYSA-N
- InChI
- 1S/C20H18N4O2S2/c1-26-9-8-21-20(25)22-13-6-7-14-15(12-13)24-19(17-5-3-11-28-17)18(23-14)16-4-2-10-27-16/h2-7,10-12H,8-9H2,1H3,(H2,21,22,25)
- Synonyms
- Ac-CoA Synthase Inhibitor - CAS 508186-14-9 - Calbiochem, 1-(2,3-di(Thiophen-2-yl)quinoxalin-6-yl)-3-(2-methoxyethyl)...
- 1-(2,5-dichlorophenyl)cyclopropan-1-amine hydrochloride◐ .Made to order · 8–12 wks Item #: D302311View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-(2,5-dichlorophenyl)cyclopropan-1-amine
- SMILES
- C1CC1(C2=C(C=CC(=C2)Cl)Cl)N
- InChIKey
- CWKWHCDCFBSKLE-UHFFFAOYSA-N
- InChI
- 1S/C9H9Cl2N/c10-6-1-2-8(11)7(5-6)9(12)3-4-9/h1-2,5H,3-4,12H2
- 1-(2-Amino-4-methoxyphenyl)ethanone● In Stock — US warehouse, ships to EU* Item #: A303698View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-(2-amino-4-methoxyphenyl)ethanone
- SMILES
- CC(=O)C1=C(C=C(C=C1)OC)N
- InChIKey
- FOFUOGSRVUOROJ-UHFFFAOYSA-N
- InChI
- 1S/C9H11NO2/c1-6(11)8-4-3-7(12-2)5-9(8)10/h3-5H,10H2,1-2H3
- Synonyms
- AM807186 | MFCD04972112 | SCHEMBL312677 | AKOS006294673 | 1-(2-amino-4-methoxyphenyl)ethan-1-one | AS-35990 | SB37152...
![1-(11bS)-Dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-ylpyrrolidine - ≥95% CAS No(627528-96-5) by Aladdin Scientific](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/S/3/S304199.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.