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
24,652Navigate 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
2,812PROTAC 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
102,662Explore 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)
19,717Find 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 (where available)—to build screening and validation sets.
By Disease (DOID)
8,794Shop 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.
Popular Products
- GGTI-298 TFACAS: 1217457-86-7 Formula: C29H34F3N3O5S Molecular Weight: 593.66Solid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥95%● In Stock — US Item #: G287072View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- methyl (2S)-2-[[4-[[(2R)-2-amino-3-sulfanylpropyl]amino]-2-naphthalen-1-ylbenzoyl]amino]-4-methylpentanoate;2,2,2-trifluoroacetic acid
- SMILES
- CC(C)CC(C(=O)OC)NC(=O)C1=C(C=C(C=C1)NCC(CS)N)C2=CC=CC3=CC=CC=C32.C(=O)(C(F)(F)F)O
- InChIKey
- WALKWJPZELDSKT-UFABNHQSSA-N
- InChI
- show more
- Synonyms
- GGTI298 (Trifluoroacetate) | DTXSID70582025 | PLVGDGRBPMVYPB-FDUHJNRSSA-N | BG178516 | GGTI 298 TFA salt | Ggti 298 |...
- NAISolid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥95%● In Stock — US Item #: N288069View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- imidazol-1-yl-(2-methylpyridin-3-yl)methanone
- SMILES
- CC1=C(C=CC=N1)C(=O)N2C=CN=C2
- InChIKey
- OWQPEDNXDCVXJO-UHFFFAOYSA-N
- InChI
- 1S/C10H9N3O/c1-8-9(3-2-4-12-8)10(14)13-6-5-11-7-13/h2-7H,1H3
- Synonyms
- 3-(1H-imidazole-1-carbonyl)-2-methylpyridine | 5S rRNA modificator 2 | Imidazol-1-yl-(2-methyl-3-pyridyl)methanone | ...
- Citric AcidMoligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. 3% (w/w)● In Stock — US Item #: C291963View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-hydroxypropane-1,2,3-tricarboxylic acid
- SMILES
- C(C(=O)O)C(CC(=O)O)(C(=O)O)O
- InChIKey
- KRKNYBCHXYNGOX-UHFFFAOYSA-N
- InChI
- 1S/C6H8O7/c7-3(8)1-6(13,5(11)12)2-4(9)10/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)
- Synonyms
- Citric acid monoglyceride | Citric acid, 99% | ANHYDROUS CITRIC ACID COMPONENT OF CLENPIQ | HSDB 911 | NCIOpen2_00450...
- Citric AcidLiquid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. 1 gram per 1 mL Water, Filtered◐ .Made to order · 8–12 wks Item #: C291950View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-hydroxypropane-1,2,3-tricarboxylic acid
- SMILES
- C(C(=O)O)C(CC(=O)O)(C(=O)O)O
- InChIKey
- KRKNYBCHXYNGOX-UHFFFAOYSA-N
- InChI
- 1S/C6H8O7/c7-3(8)1-6(13,5(11)12)2-4(9)10/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)
- Synonyms
- Citric acid monoglyceride | Citric acid, 99% | ANHYDROUS CITRIC ACID COMPONENT OF CLENPIQ | HSDB 911 | NCIOpen2_00450...
- Citric AcidMoligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. 29% (w/w)◐ .Made to order · 8–12 wks Item #: C291965View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-hydroxypropane-1,2,3-tricarboxylic acid
- SMILES
- C(C(=O)O)C(CC(=O)O)(C(=O)O)O
- InChIKey
- KRKNYBCHXYNGOX-UHFFFAOYSA-N
- InChI
- 1S/C6H8O7/c7-3(8)1-6(13,5(11)12)2-4(9)10/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)
- Synonyms
- Citric acid monoglyceride | Citric acid, 99% | ANHYDROUS CITRIC ACID COMPONENT OF CLENPIQ | HSDB 911 | NCIOpen2_00450...
- Citric AcidMoligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. 50% w/v● In Stock — US Item #: C291967View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-hydroxypropane-1,2,3-tricarboxylic acid
- SMILES
- C(C(=O)O)C(CC(=O)O)(C(=O)O)O
- InChIKey
- KRKNYBCHXYNGOX-UHFFFAOYSA-N
- InChI
- 1S/C6H8O7/c7-3(8)1-6(13,5(11)12)2-4(9)10/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)
- Synonyms
- Citric acid monoglyceride | Citric acid, 99% | ANHYDROUS CITRIC ACID COMPONENT OF CLENPIQ | HSDB 911 | NCIOpen2_00450...
- GYKI 53655 hydrochlorideCAS: 143692-48-2 Formula: C19H20N4O3.HCl Molecular Weight: 388.85◐ .Made to order · 8–12 wks Item #: G275036View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 5-(4-aminophenyl)-N,8-dimethyl-8,9-dihydro-[1,3]dioxolo[4,5-h][2,3]benzodiazepine-7-carboxamide;hydrochloride
- SMILES
- CC1CC2=CC3=C(C=C2C(=NN1C(=O)NC)C4=CC=C(C=C4)N)OCO3.Cl
- InChIKey
- ASLCSBBDVWPSQT-UHFFFAOYSA-N
- InChI
- 1S/C19H20N4O3.ClH/c1-11-7-13-8-16-17(26-10-25-16)9-15(13)18(22-23(11)19(24)21-2)12-3-5-14(20)6-4-12;/h3-6,8-9,11H,7,10,20H2,1-2H3,(H,21,24);1H
- Synonyms
- Q27271407 | LY-300168 MONOHYDROCHLORIDE, (+/-)- | UNII-91HGG22IDM | 1-(4-Aminophenyl)-3-methylcarbamyl-4-methyl-3,4-d...
- PLTX-II◐ .US Made to order · 2–4 wks Item #: P275589View ProductPricing & Pack Sizes
Technical Identifiers
- Clenbuterol hydrochloride250μg/ml in methanol● In Stock — US Item #: C140536View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-(4-amino-3,5-dichlorophenyl)-2-(tert-butylamino)ethanol;hydrochloride
- SMILES
- CC(C)(C)NCC(C1=CC(=C(C(=C1)Cl)N)Cl)O.Cl
- InChIKey
- OPXKTCUYRHXSBK-UHFFFAOYSA-N
- InChI
- 1S/C12H18Cl2N2O.ClH/c1-12(2,3)16-6-10(17)7-4-8(13)11(15)9(14)5-7;/h4-5,10,16-17H,6,15H2,1-3H3;1H
- Synonyms
- CLENBUTEROL HYDROCHLORIDE (EP MONOGRAPH) | Clenbuterol hydrochloride, European Pharmacopoeia (EP) Reference Standard ...
- Clenbuterol solution1.0mg/ml in methanol● In Stock — US Item #: C119869View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Clenbuterol in Methanol | Clenbuterol hydrochloride | 4-Amino-α-(t-butylaminomethyl)-3,5-dichlorobenzyl alcohol hydro...
- MM 54 （TFA salt）CAS: 1313027-43-8(free base) Formula: C70H121N29O15S4(free base) Molecular Weight: 1737.15(free base)● In Stock — US Item #: M286808View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- H-Cys(1)-Arg-Pro-Arg-Leu-Cys(1)-Lys-His-Cys(2)-Arg-Pro-Arg-Leu-Cys(2)-OH TFA salt
- 1-Bromo-4-Isocyanobenzene● In Stock — US Item #: B303469View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-bromo-4-isocyanobenzene
- SMILES
- [C-]#[N+]C1=CC=C(C=C1)Br
- InChIKey
- UVXCIFWBXFTMOD-UHFFFAOYSA-N
- InChI
- 1S/C7H4BrN/c1-9-7-4-2-6(8)3-5-7/h2-5H
- Synonyms
- 1-bromo-4-isocyanobenzene|33554-73-3|4-Bromophenylisocyanide|4-bromophenyl-isocyanide|SCHEMBL997985|LCZC3172|DTXSID00...
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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.