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-O-hexadecyl-2-acetyl-sn-glycerol (HAG)CAS: 77133-35-8 Formula: C21H42O4 Molecular Weight: 358.556◐ .Made to order · 8–12 wks Item #: O130789View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- [(2S)-1-hexadecoxy-3-hydroxypropan-2-yl] acetate
- SMILES
- CCCCCCCCCCCCCCCCOCC(CO)OC(=O)C
- InChIKey
- QTEHGUUSIIWOOW-NRFANRHFSA-N
- InChI
- 1S/C21H42O4/c1-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-24-19-21(18-22)25-20(2)23/h21-22H,3-19H2,1-2H3/t21-/m0/s1
- Synonyms
- CDA13335 | 1-hexadecyl-2-acetyl-sn-glycerol | SR-01000946545 | [(2S)-1-hexadecoxy-3-hydroxypropan-2-yl] acetate | 1-H...
- 1-Benzyl-3-(chloromethyl)-1H-indazoleCAS: 131427-22-0 Formula: C15H13ClN2 Molecular Weight: 256.73● In Stock — US warehouse, ships to EU* Item #: D302364View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-benzyl-3-(chloromethyl)indazole
- SMILES
- C1=CC=C(C=C1)CN2C3=CC=CC=C3C(=N2)CCl
- InChIKey
- WUUJVTQUZJCUSE-UHFFFAOYSA-N
- InChI
- 1S/C15H13ClN2/c16-10-14-13-8-4-5-9-15(13)18(17-14)11-12-6-2-1-3-7-12/h1-9H,10-11H2
- Synonyms
- 1-Benzyl-3-(chloromethyl)-1H-indazole | MFCD20134218 | 1-benzyl-3-chloromethyl-1H-indazole | SB16312 | AS-32532 | WUU...
- rac-Hesperetin-d3CAS: 1346605-26-2 Formula: C16H11D3O6 Molecular Weight: 305.3◐ .Made to order · 8–12 wks Item #: R355422View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 5,7-dihydroxy-2-[3-hydroxy-4-(trideuteriomethoxy)phenyl]-2,3-dihydrochromen-4-one
- SMILES
- COC1=C(C=C(C=C1)C2CC(=O)C3=C(C=C(C=C3O2)O)O)O
- InChIKey
- AIONOLUJZLIMTK-FIBGUPNXSA-N
- InChI
- 1S/C16H14O6/c1-21-13-3-2-8(4-10(13)18)14-7-12(20)16-11(19)5-9(17)6-15(16)22-14/h2-6,14,17-19H,7H2,1H3/i1D3
- Synonyms
- 2,3-Dihydro-5,7-dihydroxy-2-[3-hydroxy-4-(methoxy-d3)phenyl)-4H-1-benzopyran-4-one
- 2,4-Dfluoro-5-nitrobenzoicacidmethylester● In Stock — US warehouse, ships to EU* Item #: D302301View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- methyl 2,4-difluoro-5-nitrobenzoate
- SMILES
- COC(=O)C1=CC(=C(C=C1F)F)[N+](=O)[O-]
- InChIKey
- KLMBOVOUTOBMLS-UHFFFAOYSA-N
- InChI
- 1S/C8H5F2NO4/c1-15-8(12)4-2-7(11(13)14)6(10)3-5(4)9/h2-3H,1H3
- Synonyms
- F1905-7112 | Methyl 2,4-difluoro-5-nitrobenzoate | Methyl2,4-difluoro-5-nitrobenzoate | SCHEMBL2247382 | BENZOIC ACID...
- 1-O-hexadecyl-2-O-methyl-sn-glycerol (PMG)CAS: 96960-92-8 Formula: C20H42O3 Molecular Weight: 330.546◐ .Made to order · 8–12 wks Item #: O130823View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2S)-3-hexadecoxy-2-methoxypropan-1-ol
- SMILES
- CCCCCCCCCCCCCCCCOCC(CO)OC
- InChIKey
- XAWCMDFDFNRKGK-FQEVSTJZSA-N
- InChI
- 1S/C20H42O3/c1-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-23-19-20(18-21)22-2/h20-21H,3-19H2,1-2H3/t20-/m0/s1
- Synonyms
- 1-O-palmityl-2-O-methyl-sn-glycerolPMG
- 1,3,4,6-Tetra-O-acetyl-2-deoxy-2-[(2-azidoacetyl)amino]-β-D-glucopyranoseCAS: 857677-98-6 Formula: C16H22N4O10 Molecular Weight: 430.37● In Stock — US warehouse, ships to EU* Item #: T304781View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- [(2R,3S,4R,5R,6S)-3,4,6-triacetyloxy-5-[(2-azidoacetyl)amino]oxan-2-yl]methyl acetate
- SMILES
- CC(=O)OCC1C(C(C(C(O1)OC(=O)C)NC(=O)CN=[N+]=[N-])OC(=O)C)OC(=O)C
- InChIKey
- HGMISDAXLUIXKM-JPIRQXTESA-N
- InChI
- show more
- 15(R)-Prostaglandin F₂ₐ◐ .Made to order · 8–12 wks Item #: R356078View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (Z)-7-[(1R,2R,3R,5S)-3,5-dihydroxy-2-[(E,3R)-3-hydroxyoct-1-enyl]cyclopentyl]hept-5-enoic acid
- SMILES
- CCCCCC(C=CC1C(CC(C1CC=CCCCC(=O)O)O)O)O
- InChIKey
- PXGPLTODNUVGFL-CKXCCYAOSA-N
- InChI
- show more
- Synonyms
- 15(R)-Prostaglandin F2alpha | 15R-PGF2alpha | 15-epi-PGF2alpha | 9α,11α,15R-trihydroxy-prosta-5Z,13E-dien-1-oic acid ...
- 2-(2-Hydroxyethoxy)ethyl 4-methylbenzenesulfonateCAS: 118591-58-5 Formula: C11H16O5S Molecular Weight: 260.31◐ .Made to order · 8–12 wks Item #: H302272View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-(2-hydroxyethoxy)ethyl 4-methylbenzenesulfonate
- SMILES
- CC1=CC=C(C=C1)S(=O)(=O)OCCOCCO
- InChIKey
- KLDLLRZCWYKJBD-UHFFFAOYSA-N
- InChI
- 1S/C11H16O5S/c1-10-2-4-11(5-3-10)17(13,14)16-9-8-15-7-6-12/h2-5,12H,6-9H2,1H3
- Synonyms
- 118591-58-5|2-(2-Hydroxyethoxy)ethyl 4-methylbenzenesulfonate|Tos-PEG2-OH|PEG3-Tos|Ethanol, 2-(2-hydroxyethoxy)-, 1-(...
- 2-(2-ethenylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolaneCAS: 910242-00-1 Formula: C14H19BO2 Molecular Weight: 230.11● In Stock — US warehouse, ships to EU* Item #: E304953View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-(2-ethenylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
- SMILES
- B1(OC(C(O1)(C)C)(C)C)C2=CC=CC=C2C=C
- InChIKey
- LMSISTSGLMQBGW-UHFFFAOYSA-N
- InChI
- 1S/C14H19BO2/c1-6-11-9-7-8-10-12(11)15-16-13(2,3)14(4,5)17-15/h6-10H,1H2,2-5H3
- Neuropeptide S (rat)（TFA）CAS: 412938-75-1(free base) Formula: C95H160N34O27（free base） Molecular Weight: 2210.52（free base）● In Stock — US warehouse, ships to EU* Item #: N275649View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- L-seryl-L-phenylalanyl-L-arginyl-L-asparaginylglycyl-L-valylglycyl-L-serylglycyl-L-valyl-L-lysyl-L-lysyl-L-threonyl-L...
- Neuropeptide SF (mouse, rat) TFACAS: 230960-31-3 PubChem CID: 90488868 Formula: C40H65N13O10• XCF3COOH Molecular Weight: 888.03(free basis)● In Stock — US warehouse, ships to EU* Item #: N288552View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC(C)CC(C(=O)NC(C)C(=O)NC(C)C(=O)N1CCCC1C(=O)NC(CCC(=O)N)C(=O)NC(CCCN=C(N)N)C(=O)NC(CC2=CC=CC=C2)C(=O)N)NC(=O)C(CO)N
- InChIKey
- OLOSAWFREOVGQW-CJKZIAQFSA-N
- InChI
- show more
- 2-(2-chloro-4-fluorophenyl)-2,2-difluoroacetic acidCAS: 1551074-08-8 Formula: C8H4ClF3O2 Molecular Weight: 224.56◐ .Made to order · 8–12 wks Item #: C302995View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-(2-chloro-4-fluorophenyl)-2,2-difluoroacetic acid
- SMILES
- C1=CC(=C(C=C1F)Cl)C(C(=O)O)(F)F
- InChIKey
- KZSYIZAWJUNBHG-UHFFFAOYSA-N
- InChI
- 1S/C8H4ClF3O2/c9-6-3-4(10)1-2-5(6)8(11,12)7(13)14/h1-3H,(H,13,14)
![1,3,4,6-Tetra-O-acetyl-2-deoxy-2-[(2-azidoacetyl)amino]-β-D-glucopyranose](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/T/3/T304781.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.