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
24,642Navigate 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
102,635Explore 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)
19,700Find 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)
8,782Shop 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
- Fmoc-O-methyl-L-homoserineCAS: 173212-86-7 Formula: C20H21NO5 Molecular Weight: 355.38● In Stock — US warehouse, ships to EU* Item #: F337136View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2S)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-methoxybutanoic acid
- SMILES
- COCCC(C(=O)O)NC(=O)OCC1C2=CC=CC=C2C3=CC=CC=C13
- InChIKey
- JBIRUWVMQYLPPX-SFHVURJKSA-N
- InChI
- 1S/C20H21NO5/c1-25-11-10-18(19(22)23)21-20(24)26-12-17-15-8-4-2-6-13(15)14-7-3-5-9-16(14)17/h2-9,17-18H,10-12H2,1H3,(H,21,24)(H,22,23)/t18-/m0/s1
- Synonyms
- Fmoc-L-HomoSer(Me)-OH | S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-methoxybutanoic acid | Fmoc-hse(me)-oh | (...
- TAT-Gap19 TFACAS: 1507930-54-2(free) Formula: C121H213N46O28F3 Molecular Weight: 2817.28● In Stock — US warehouse, ships to EU* Item #: T295087View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- L-Tyrosylglycyl-L-arginyl-L-lysyl-L-lysyl-L-arginyl-L-arginyl-L-glutaminyl-L-arginyl-L-arginyl-L-arginyl-L-lysyl-L-gl...
- 9,10-Dibutoxyanthracene● In Stock — US warehouse, ships to EU* Item #: D304573View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 9,10-dibutoxyanthracene
- SMILES
- CCCCOC1=C2C=CC=CC2=C(C3=CC=CC=C31)OCCCC
- InChIKey
- KSMGAOMUPSQGTB-UHFFFAOYSA-N
- InChI
- 1S/C22H26O2/c1-3-5-15-23-21-17-11-7-9-13-19(17)22(24-16-6-4-2)20-14-10-8-12-18(20)21/h7-14H,3-6,15-16H2,1-2H3
- Synonyms
- MFCD22495163 | AKOS016004436 | 9,10-dibutoxyanthracene | Anthracene, 9,10-dibutoxy- | BDA27514 | AMY8612 | SCHEMBL442...
- AR-42Solid ≥98%● In Stock — US warehouse, ships to EU* Item #: A127913View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-hydroxy-4-[[(2S)-3-methyl-2-phenylbutanoyl]amino]benzamide
- SMILES
- CC(C)C(C1=CC=CC=C1)C(=O)NC2=CC=C(C=C2)C(=O)NO
- InChIKey
- LAMIXXKAWNLXOC-INIZCTEOSA-N
- InChI
- 1S/C18H20N2O3/c1-12(2)16(13-6-4-3-5-7-13)18(22)19-15-10-8-14(9-11-15)17(21)20-23/h3-12,16,23H,1-2H3,(H,19,22)(H,20,21)/t16-/m0/s1
- Synonyms
- AC-5612 | DB12707 | NCGC00263153-01 | CCG-208672 | NCGC00263153-05 | AR-42 - HDAC-42 | CHEBI:188197 | (S)-HDAC 42 | A...
- TB 21007◐ .Made to order · 8–12 wks Item #: T288798View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 3-(2-hydroxyethylsulfanyl)-6,6-dimethyl-1-(1,3-thiazol-2-yl)-5,7-dihydro-2-benzothiophen-4-one
- SMILES
- CC1(CC2=C(SC(=C2C(=O)C1)SCCO)C3=NC=CS3)C
- InChIKey
- QILRYFCEXLFIDS-UHFFFAOYSA-N
- InChI
- 1S/C15H17NO2S3/c1-15(2)7-9-11(10(18)8-15)14(20-6-4-17)21-12(9)13-16-3-5-19-13/h3,5,17H,4,6-8H2,1-2H3
- Synonyms
- UNII-VL2NQQ83RN | 6,7-Dihydro-3-((2-hydroxyethyl)thio)-6,6-dimethyl-1-(2-thiazolyl)benzo(C)thiophen-4(5H)-one | Benzo...
- Urea formaldehydeSolid content 60%● In Stock — US warehouse, ships to EU* Item #: U304906View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- formaldehyde;urea
- SMILES
- C=O.C(=O)(N)N
- InChIKey
- ODGAOXROABLFNM-UHFFFAOYSA-N
- InChI
- 1S/CH4N2O.CH2O/c2-1(3)4;1-2/h(H4,2,3,4);1H2
- Synonyms
- Urea formaldehyde|9011-05-6|formaldehyde;urea|urea-formaldehyde|64869-57-4|ureaformaldehyde|68071-45-4|68002-18-6|680...
- Methyllycaconitine citrate (MLA)Solid 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 #: M275325View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CCN1CC2(CCC(C34C2C(C(C31)(C5(CC(C6CC4C5C6OC)OC)O)O)OC)OC)COC(=O)C7=CC=CC=C7N8C(=O)CC(C8=O)C.C(C(=O)O)C(CC(=O)O)(C(=O)O)O
- InChIKey
- INBLZNJHDLEWPS-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- [1α,4(S),6β,14α,16β]-20-Ethyl-1,6,14,16-tetramethoxy-4-[[[2-(3-methyl-2,5-dioxo-1-pyrrolidinyl)benzoyl]oxy]methyl]aco...
- Polyethylene glycol monoisodecyl etherLiquid E-1006◐ .Made to order · 8–12 wks Item #: P304168View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-(8-methylnonoxy)ethanol
- SMILES
- CC(C)CCCCCCCOCCO
- InChIKey
- LHTCFGRXHNJRBP-UHFFFAOYSA-N
- InChI
- 1S/C12H26O2/c1-12(2)8-6-4-3-5-7-10-14-11-9-13/h12-13H,3-11H2,1-2H3
- 8-iso Prostaglandin E2CAS: 27415-25-4 Formula: C20H32O5 Molecular Weight: 352.47Solid 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 #: I355894View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (Z)-7-[(1S,2R,3R)-3-hydroxy-2-[(E,3S)-3-hydroxyoct-1-enyl]-5-oxocyclopentyl]hept-5-enoic acid
- SMILES
- CCCCCC(C=CC1C(CC(=O)C1CC=CCCCC(=O)O)O)O
- InChIKey
- XEYBRNLFEZDVAW-CLQOMRTCSA-N
- InChI
- show more
- Synonyms
- SR-01000946422 | 8-iso PROSTAGLANDIN E2 | 8-isoprostaglandin E2 | W1ANC8Q5NW | 8-epi-prostaglandin E2 | DINOPROSTONE ...
- Mezlocillin sodiumCAS: 59798-30-0 EC Number: 624-089-6 PubChem CID: 23685177 Formula: C21H24N5NaO8S2 Molecular Weight: 561.564◐ .Made to order · 8–12 wks Item #: M304101View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC1(C(N2C(S1)C(C2=O)NC(=O)C(C3=CC=CC=C3)NC(=O)N4CCN(C4=O)S(=O)(=O)C)C(=O)[O-])C.[Na+]
- InChIKey
- GTGQRSIMEUWHPA-ZBJAFUORSA-M
- InChI
- show more
- Synonyms
- AKOS025310095 | Antibiotic bay-f 1353 | SCHEMBL41074 | sodium 6beta-{(2R)-2-[3-(methanesulfonyl)-2-oxoimidazolidine-1...
- Osmium(IV) oxideCAS: 12036-02-1 Formula: OsO2 Molecular Weight: 222.2Os 83%● In Stock — US warehouse, ships to EU* Item #: O302601View ProductPricing & Pack Sizes
Technical Identifiers
- MethylstatCAS: 1310877-95-2 Formula: C28H31N3O6 Molecular Weight: 505.56Solid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥95%◐ .Made to order · 8–12 wks Item #: M275959View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- methyl (E)-4-[hydroxy-[4-[[4-(naphthalen-1-ylcarbamoyloxymethyl)phenyl]methylamino]butyl]amino]-4-oxobut-2-enoate
- SMILES
- COC(=O)C=CC(=O)N(CCCCNCC1=CC=C(C=C1)COC(=O)NC2=CC=CC3=CC=CC=C32)O
- InChIKey
- MUJOCHRZXRZONW-FOCLMDBBSA-N
- InChI
- show more
- Synonyms
- methyl (E)-4-[hydroxy-[4-[[4-(naphthalen-1-ylcarbamoyloxymethyl)phenyl]methylamino]butyl]amino]-4-oxobut-2-enoate | M...
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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.