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
- Gap19● In Stock — US warehouse, ships to EU* Item #: G287766View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
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- SMILES
- CCC(C)C(C(=O)NC(CCC(=O)O)C(=O)NC(C(C)CC)C(=O)NC(CCCCN)C(=O)NC(CCCCN)C(=O)NC(CC1=CC=CC=C1)C(=O)NC(CCCCN)C(=O)O)NC(=O)C(CCC(=O)N)NC(=O)C(CCCCN)N
- InChIKey
- IEAKEKFIXUZWEH-PKMKMBMKSA-N
- InChI
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- Glycyl-DL-alanineCAS: 926-77-2 Formula: C5H10N2O3 Molecular Weight: 146.15● In Stock — US warehouse, ships to EU* Item #: G355788View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-[(2-aminoacetyl)amino]propanoic acid
- SMILES
- CC(C(=O)O)NC(=O)CN
- InChIKey
- VPZXBVLAVMBEQI-UHFFFAOYSA-N
- InChI
- 1S/C5H10N2O3/c1-3(5(9)10)7-4(8)2-6/h3H,2,6H2,1H3,(H,7,8)(H,9,10)
- Synonyms
- 2-Oxo-1-(4-piperidinyl)-2,3-dihydro-1H-imidazo[4,5-b]pyridine dihydrochloride | L-Alanine, N-glycyl- | LS-11536 | SCH...
- Goserelin acetate, AGONIST of Gonadotropin-releasing hormone receptor agonistCAS: 145781-92-6 EC Number: 652-995-1 PubChem CID: 16052011 Formula: C61H88N18O16 Molecular Weight: 1329.485Solid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥98%● In Stock — US warehouse, ships to EU* Item #: G288355View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
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- SMILES
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- InChIKey
- IKDXDQDKCZPQSZ-JHYYTBFNSA-N
- InChI
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- Synonyms
- LARSGJZNVQJRMD-UHFFFAOYSA-N | GOSERELIN ACETATE [ORANGE BOOK] | D00573 | NSC606864 | 4-[[(1R)-2-[5-(2-fluoro-3-methox...
- G-P-R◐ .Made to order · 8–12 wks Item #: G343321View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2S)-2-[[(2S)-1-(2-aminoacetyl)pyrrolidine-2-carbonyl]amino]-5-(diaminomethylideneamino)pentanoic acid
- SMILES
- C1CC(N(C1)C(=O)CN)C(=O)NC(CCCN=C(N)N)C(=O)O
- InChIKey
- JYPCXBJRLBHWME-IUCAKERBSA-N
- InChI
- 1S/C13H24N6O4/c14-7-10(20)19-6-2-4-9(19)11(21)18-8(12(22)23)3-1-5-17-13(15)16/h8-9H,1-7,14H2,(H,18,21)(H,22,23)(H4,15,16,17)/t8-,9-/m0/s1
- Synonyms
- HY-P3528 | CHEBI:163949 | Gly-pro-arg | Glycyl-L-prolyl-L-arginine | GPR | G-P-R | (2S)-2-[[(2S)-1-(2-aminoacetyl)pyr...
- G-Protein antagonist peptide TFACAS: 143675-79-0(free) Formula: C57H64N12O9S·xC2HF3O2 Molecular Weight: 1093.26（free）◐ .Made to order · 8–12 wks Item #: G409316View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- [pGlu5, D-Trp7,9,10]-Substance P Fragment 5-11 | pGlu-Gln-D-Trp-Phe-D-Trp-D-Trp-Met-NH2
- L-R4W2 TFACAS: 206350-79-0(free base) Formula: Molecular Weight: 1014.2（free base）● In Stock — US warehouse, ships to EU* Item #: L288302View ProductPricing & Pack Sizes
Technical Identifiers
- GIP(1-39) TFACAS: 725474-97-5(free) Formula: C210H316N56O61S(free) Molecular Weight: 4633.21(free)◐ .Made to order · 8–12 wks Item #: G286726View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Gastric Inhibitory Polypeptide (1-39)
- GR 73632CAS: 133156-06-6 Formula: C40H59N7O6S Molecular Weight: 766.01◐ .Made to order · 8–12 wks Item #: G287591View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
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- SMILES
- CC(C)CC(C(=O)NC(CCSC)C(=O)N)N(C)C(=O)C1CCCN1C(=O)C(CC2=CC=CC=C2)NC(=O)C(CC3=CC=CC=C3)NC(=O)CCCCN
- InChIKey
- HQKPTSSZOJLFBZ-LJADHVKFSA-N
- InChI
- show more
- Synonyms
- DELTA-AMINOVALERYL-PHE-PHE-PRO-N-ME-LEU-MET-NH2 | MS-31376 | N-{2-[(5-Amino-1-hydroxypentylidene)amino]-1-hydroxy-3-p...
- PEN(mouse) TFACAS: 1236955-25-1 PubChem CID: 131648253 Formula: C102H169N27O34 Molecular Weight: 2317.62(free base basis)● In Stock — US warehouse, ships to EU* Item #: P287491View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
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- SMILES
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- InChIKey
- FQPFUCOMMICWOE-CPPASMBOSA-N
- InChI
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- Synonyms
- proSAAS(221-242) TFA
- MSG606 TFACAS: 1416983-77-1(free basis) Formula: C62H82N20O13S(free basis) Molecular Weight: 1347.51(free basis)◐ .Made to order · 8–12 wks Item #: M287255View ProductPricing & Pack Sizes
Technical Identifiers
- Myelin Basic Protein (87-99)◐ .Made to order · 8–12 wks Item #: M286889View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
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- SMILES
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- InChIKey
- XSSZRUKIAIQNAZ-SAKFXWCOSA-N
- InChI
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- Orexin B (human) TFACAS: 205640-91-1(free) Formula: C123H212N44O35S·C2HF3O2 Molecular Weight: 3013.36● In Stock — US warehouse, ships to EU* Item #: O407197View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Human orexin B TFA；Orexin B, human TFA
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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.