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
- [Sar1, Ile8]-Angiotensin II TFAFormula: C48H74F3N13O12 Molecular Weight: 1082.18◐ Made to order · 8–12 wks Item #: S658741View ProductPricing & Pack Sizes
Technical Identifiers
- Defensin HNP-1 human TFAFormula: C152H223F3N44O40S6 Molecular Weight: 3556.05◐ Made to order · 8–12 wks Item #: D658754View ProductPricing & Pack Sizes
Technical Identifiers
- DSPE-PEG-Azide (MW 2000)◐ Made to order · 8–12 wks Item #: D658748View ProductPricing & Pack Sizes
Technical Identifiers
- Syk-IN-4Formula: C21H25N9O Molecular Weight: 419.48◐ Made to order · 8–12 wks Item #: S658845View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- CC1=NN(C=C1CN(C)C)C2=NC(NC3=CC=C(N(C)N=C4C(NC)=O)C4=C3)=NC=C2
- 3X FLAG peptide TFAFormula: C122H170F3N31O51S Molecular Weight: 2975.84◐ Made to order · 8–12 wks Item #: F658858View ProductPricing & Pack Sizes
Technical Identifiers
- Asoxime-d4dichlorideFormula: C14H12D4Cl2N4O3 Molecular Weight: 363.23◐ Made to order · 8–12 wks Item #: A658855View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- O/N=C/C1=CC=CC=[N+]1COC[N+]2=C([2H])C([2H])=C(C(N)=O)C([2H])=C2[2H].[Cl-].[Cl-]
- Aminobenzenesulfonic auristatin E-d8Formula: C37H56D8N6O8S Molecular Weight: 761.05◐ Made to order · 8–12 wks Item #: A658871View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
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- AZT triphosphate tetraammoniumFormula: C10H28N9O13P3 Molecular Weight: 575.3◐ Made to order · 8–12 wks Item #: A658868View ProductPricing & Pack Sizes
Technical Identifiers
- WF-47-JS03Formula: C30H38N6O2 Molecular Weight: 514.66◐ Made to order · 8–12 wks Item #: W658865View ProductPricing & Pack Sizes
Technical Identifiers
- SMILES
- NC(N1C(N=C2NC3CC(C)(C)N(C)C(C)(C)C3)=C(C4=CC(OC)=C(OC)C=C4)C=N1)=C2C5=CC=CC=C5
- {Val1}-Exendin-3/4Molecular Weight: 3241.7◐ Made to order · 8–12 wks Item #: V658884View ProductPricing & Pack Sizes
Technical Identifiers
- FC131 TFAFormula: C38H48F3N11O8 Molecular Weight: 843.85◐ Made to order · 8–12 wks Item #: F658875View ProductPricing & Pack Sizes
Technical Identifiers
- PROTAC Bcl-xL degrader-2Formula: C68H80N8O14S3 Molecular Weight: 1329.6◐ Made to order · 8–12 wks Item #: P658881View ProductPricing & Pack Sizes
Technical Identifiers
![[Sar1, Ile8]-Angiotensin II TFA](https://www.aladdinsci.com/media/catalog/product/placeholder/default/default_5.jpg)
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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.