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
24,635Navigate 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
- PhytolaccageninCAS: 1802-12-6 EC Number: 683-154-7 PubChem CID: 21594228 Formula: C31H48O7 Molecular Weight: 532.7110mM in DMSO● In Stock — US warehouse, ships to EU* Item #: P422205View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
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- SMILES
- CC1(CCC2(CCC3(C(=CCC4C3(CCC5C4(CC(C(C5(C)CO)O)O)C)C)C2C1)C)C(=O)O)C(=O)OC
- InChIKey
- CYJWWQALTIKOAG-FLORRLIPSA-N
- InChI
- show more
- Synonyms
- 10,11-dihydroxy-9-(hydroxymethyl)-2-methoxycarbonyl-2,6a,6b,9,12a-pentamethyl-1,3,4,5,6,6a,7,8,8a,10,11,12,13,14b-tet...
- Picfeltarraenin IB10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: P427182View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
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- SMILES
- CC1C(C(C(C(O1)OC2C(C(C(OC2OC3CCC4C(=CCC5C4(C(=O)CC6(C5(CC(C6C7(C(=O)C=C(O7)C(C)C)C)O)C)C)C)C3(C)C)CO)O)O)O)O)O
- InChIKey
- YRQJYHITIWJZQN-UGBBSPHQSA-N
- InChI
- show more
- Synonyms
- 19-Norlanosta-5,23-diene-11,22-dione,3-[[2-O-(6-deoxy-α-L-mannopyranosyl)-β-D-glucopyranosyl]oxy]-�...
- Picfeltarraenin IB● In Stock — US warehouse, ships to EU* Item #: P412866View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
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- SMILES
- CC1C(C(C(C(O1)OC2C(C(C(OC2OC3CCC4C(=CCC5C4(C(=O)CC6(C5(CC(C6C7(C(=O)C=C(O7)C(C)C)C)O)C)C)C)C3(C)C)CO)O)O)O)O)O
- InChIKey
- YRQJYHITIWJZQN-UGBBSPHQSA-N
- InChI
- show more
- Synonyms
- 19-Norlanosta-5,23-diene-11,22-dione,3-[[2-O-(6-deoxy-α-L-mannopyranosyl)-β-D-glucopyranosyl]oxy]-�...
- Pigment Red 63:1● In Stock — US warehouse, ships to EU* Item #: P341829View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- calcium;2-[(3-carboxy-2-oxidonaphthalen-1-yl)diazenyl]naphthalene-1-sulfonate
- SMILES
- C1=CC=C2C(=C1)C=CC(=C2S(=O)(=O)[O-])N=NC3=C(C(=CC4=CC=CC=C43)C(=O)O)[O-].[Ca+2]
- InChIKey
- OVHKKOQGPOYPLY-UHFFFAOYSA-L
- InChI
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- Synonyms
- AKA220 | C.I. NO.15880 (D&C RED NO. 34) | 3-HYDROXY-4-((1-SULFO-2-NAPHTHALENYL)AZO)-2-NAPHTHALENECARBOXYLIC ACID, DIS...
- Physcion 8-β-D-glucosideSolid ≥98%● In Stock — US warehouse, ships to EU* Item #: P342592View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-hydroxy-6-methoxy-3-methyl-8-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyanthracene-9,10-dione
- SMILES
- CC1=CC2=C(C(=C1)O)C(=O)C3=C(C2=O)C=C(C=C3OC4C(C(C(C(O4)CO)O)O)O)OC
- InChIKey
- POMKXWCJRHNLRP-DQMLXFRHSA-N
- InChI
- show more
- Synonyms
- 1,8-Dihydroxy-3-methyl-6-methoxy-9,10-anthraquinone-8-O-(beta-D-glucoside) | CHEBI:191518 | A-D-glucopyranoside | E88...
- Pigment Red 112Technical grade ? Technical grade — industrial-quality purity with no tight impurity guarantees. Use for large-scale or non-critical processes where cost matters most.● In Stock — US warehouse, ships to EU* Item #: P342035View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 3-hydroxy-N-(2-methylphenyl)-4-[(2,4,5-trichlorophenyl)diazenyl]naphthalene-2-carboxamide
- SMILES
- CC1=CC=CC=C1NC(=O)C2=CC3=CC=CC=C3C(=C2O)N=NC4=CC(=C(C=C4Cl)Cl)Cl
- InChIKey
- JQNJCQYNSLCFAC-UHFFFAOYSA-N
- InChI
- 1S/C24H16Cl3N3O2/c1-13-6-2-5-9-20(13)28-24(32)16-10-14-7-3-4-8-15(14)22(23(16)31)30-29-21-12-18(26)17(25)11-19(21)27/h2-12,31H,1H3,(H,28,32)
- Synonyms
- EINECS 229-440-3 | MFCD00071994 | Disperse Red SDP 110T | Helio Fast Red BBN | C.I. PR 112 | 3-Hydroxy-N-(2-methylphe...
- Pilaralisib (XL147), PI3-kinase class I inhibitorCAS: 934526-89-3 EC Number: 685-482-6 PubChem CID: 56599306 Formula: C25H25ClN6O4S Molecular Weight: 541.0210mM in DMSO● In Stock — US warehouse, ships to EU* Item #: P426989View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-amino-N-[3-[[3-(2-chloro-5-methoxyanilino)quinoxalin-2-yl]sulfamoyl]phenyl]-2-methylpropanamide
- SMILES
- CC(C)(C(=O)NC1=CC(=CC=C1)S(=O)(=O)NC2=NC3=CC=CC=C3N=C2NC4=C(C=CC(=C4)OC)Cl)N
- InChIKey
- QINPEPAQOBZPOF-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- AKOS026750450 | Pilaralisib (XL147) | Pilaralisib [USAN:INN] | NSC791227 | NSC-791227 | Pilaralisib | SCHEMBL16154579...
- Pilocarpine HCl, Muscarinic acetylcholine receptor M3 agonistLiquid 10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: P424663View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3S,4R)-3-ethyl-4-[(3-methylimidazol-4-yl)methyl]oxolan-2-one;hydrochloride
- SMILES
- CCC1C(COC1=O)CC2=CN=CN2C.Cl
- InChIKey
- RNAICSBVACLLGM-GNAZCLTHSA-N
- InChI
- 1S/C11H16N2O2.ClH/c1-3-10-8(6-15-11(10)14)4-9-5-12-7-13(9)2;/h5,7-8,10H,3-4,6H2,1-2H3;1H/t8-,10-;/m0./s1
- Synonyms
- Pilocarpine hydrochloride|54-71-7|(+)-Pilocarpine hydrochloride|Pilocarpine HCl|Almocarpine|Pilocarpal|Salagen|Piloca...
- Pilocarpine nitrateMoligand™ ? 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 #: P302940View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3S,4R)-3-ethyl-4-[(3-methylimidazol-4-yl)methyl]oxolan-2-one;nitric acid
- SMILES
- CCC1C(COC1=O)CC2=CN=CN2C.[N+](=O)(O)[O-]
- InChIKey
- PRZXEPJJHQYOGF-GNAZCLTHSA-N
- InChI
- 1S/C11H16N2O2.HNO3/c1-3-10-8(6-15-11(10)14)4-9-5-12-7-13(9)2;2-1(3)4/h5,7-8,10H,3-4,6H2,1-2H3;(H,2,3,4)/t8-,10-;/m0./s1
- Synonyms
- PILOCARPINE NITRATE [VANDF] | HMS501B20 | Pilocarpine (nitrate) | SR-01000075339 | HMS2091P18 | HMS2235P11 | HMS3713I...
- PicamilonCAS: 34562-97-5 EC Number: 609-002-1 PubChem CID: 60608 Formula: C10H12N2O3 Molecular Weight: 208.2210mM in DMSO● In Stock — US warehouse, ships to EU* Item #: P423523View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-(pyridine-3-carbonylamino)butanoic acid
- SMILES
- C1=CC(=CN=C1)C(=O)NCCCC(=O)O
- InChIKey
- NAJVRARAUNYNDX-UHFFFAOYSA-N
- InChI
- 1S/C10H12N2O3/c13-9(14)4-2-6-12-10(15)8-3-1-5-11-7-8/h1,3,5,7H,2,4,6H2,(H,12,15)(H,13,14)
- Synonyms
- 4-(pyridine-3-carbonylamino)butanoic acid;Pikamilone | N-nicotinoyl-gamma-aminobutyric acid | AC-33105 | Pikamilon | ...
- Picfeltarraenin IACAS: 97230-47-2 EC Number: 683-258-2 PubChem CID: 91884878 Formula: C41H62O13 Molecular Weight: 762.92810mM in DMSO● In Stock — US warehouse, ships to EU* Item #: P427183View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC1C(C(C(C(O1)OC2C(C(COC2OC3CCC4C(=CCC5C4(C(=O)CC6(C5(CC(C6C7(C(=O)C=C(O7)C(C)C)C)O)C)C)C)C3(C)C)O)O)O)O)O
- InChIKey
- WPXIIGGPWPYUSJ-CUXXYAFUSA-N
- InChI
- show more
- Synonyms
- CCG-270444 | Picfeltarraenin IA | s9138 | HMS3887E09 | HY-N1474 | Picfeltarraenin A | (2R)-2-[(3R,8S,9R,10R,13R,14S,1...
- Phthalylsulfacetamide10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: P421228View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-[[4-(acetylsulfamoyl)phenyl]carbamoyl]benzoic acid
- SMILES
- CC(=O)NS(=O)(=O)C1=CC=C(C=C1)NC(=O)C2=CC=CC=C2C(=O)O
- InChIKey
- SNWQKAWITMVCQW-UHFFFAOYSA-N
- InChI
- 1S/C16H14N2O6S/c1-10(19)18-25(23,24)12-8-6-11(7-9-12)17-15(20)13-4-2-3-5-14(13)16(21)22/h2-9H,1H3,(H,17,20)(H,18,19)(H,21,22)
- Synonyms
- CHEBI:135528 | HMS1613G10 | Pharmakon1600-01505728 | NSC 163977 | Oprea1_188425 | Phthalylsulfacetamide [BAN:NF] | Ta...
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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.