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
24,639Navigate 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
2,815PROTAC 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
102,615Explore 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
- Saikosaponin FAnalytical standard ? Analytical standard — certified-purity material for quantitative calibration. Use to prepare calibration standards and validate analytical methods.◐ .Made to order · 8–12 wks Item #: S304194View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC1C(C(C(C(O1)OC2C(OC(C(C2O)O)OC3CCC4(C(C3(C)C)CCC5(C4CC=C6C5(CC(C7(C6CC(CC7)(C)C)CO)O)C)C)C)COC8C(C(C(C(O8)CO)O)O)O)O)O)O
- InChIKey
- SXILFEBNQCRWAL-VERCZQKXSA-N
- InChI
- show more
- Salbutamol sulfate, Beta-2 adrenergic receptor agonist10mM in Water● In Stock — US warehouse, ships to EU* Item #: S424389View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-[2-(tert-butylamino)-1-hydroxyethyl]-2-(hydroxymethyl)phenol;sulfuric acid
- SMILES
- CC(C)(C)NCC(C1=CC(=C(C=C1)O)CO)O.CC(C)(C)NCC(C1=CC(=C(C=C1)O)CO)O.OS(=O)(=O)O
- InChIKey
- BNPSSFBOAGDEEL-UHFFFAOYSA-N
- InChI
- 1S/2C13H21NO3.H2O4S/c2*1-13(2,3)14-7-12(17)9-4-5-11(16)10(6-9)8-15;1-5(2,3)4/h2*4-6,12,14-17H,7-8H2,1-3H3;(H2,1,2,3,4)
- Synonyms
- ALBUTEROL SULFATE|Salbutamol sulfate|51022-70-9|Salbutamol hemisulfate|Venetlin|Loftan|Proventil|Bronchospray|Salbuta...
- Salermide10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: S420604View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-[3-[(2-hydroxynaphthalen-1-yl)methylideneamino]phenyl]-2-phenylpropanamide
- SMILES
- CC(C1=CC=CC=C1)C(=O)NC2=CC(=CC=C2)N=CC3=C(C=CC4=CC=CC=C43)O
- InChIKey
- HQSSEGBEYORUBY-UHFFFAOYSA-N
- InChI
- 1S/C26H22N2O2/c1-18(19-8-3-2-4-9-19)26(30)28-22-12-7-11-21(16-22)27-17-24-23-13-6-5-10-20(23)14-15-25(24)29/h2-18,29H,1H3,(H,28,30)
- Synonyms
- BDBM50309827 | (E)-N-(3-((2-hydroxynaphthalen-1-yl)methyleneamino)phenyl)-2-phenylpropanamide | SCHEMBL8103931 | EX-A...
- Salvianolic acid B10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: S408395View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Sal B, Lithospermate B, Lithospermic acid B | 3-Benzofurancarboxylic acid, 4-[(1E)-3-[(1R)-1-carboxy-2-(3,4-...
- SancyclineCAS: 808-26-4 EC Number: 617-177-0 PubChem CID: 54688686 Formula: C21H22N2O7 Molecular Weight: 414.4110mM in DMSO● In Stock — US warehouse, ships to EU* Item #: S426092View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (4S,4aS,5aR,12aR)-4-(dimethylamino)-1,10,11,12a-tetrahydroxy-3,12-dioxo-4a,5,5a,6-tetrahydro-4H-tetracene-2-carboxamide
- SMILES
- CN(C)C1C2CC3CC4=C(C(=CC=C4)O)C(=C3C(=O)C2(C(=C(C1=O)C(=O)N)O)O)O
- InChIKey
- MTCQOMXDZUULRV-ADOAZJKMSA-N
- InChI
- show more
- Synonyms
- (4S,4aS,5aR,12aS)-4-(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,10,12,12a-tetrahydroxy-1,11-dioxo-2-naphthacenec...
- Sapropterin dihydrochloride, Phenylalanine-4-hydroxylase activatorSolid ≥98%● In Stock — US warehouse, ships to EU* Item #: S304404View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (6R)-2-amino-6-[(1R,2S)-1,2-dihydroxypropyl]-5,6,7,8-tetrahydro-3H-pteridin-4-one;dihydrochloride
- SMILES
- CC(C(C1CNC2=C(N1)C(=O)NC(=N2)N)O)O.Cl.Cl
- InChIKey
- RKSUYBCOVNCALL-NTVURLEBSA-N
- InChI
- 1S/C9H15N5O3.2ClH/c1-3(15)6(16)4-2-11-7-5(12-4)8(17)14-9(10)13-7;;/h3-4,6,12,15-16H,2H2,1H3,(H4,10,11,13,14,17);2*1H/t3-,4+,6-;;/m0../s1
- Synonyms
- Biopten (TN) | 4-Fluoro-beta-nitrostyrene, >=98.5% (sum of isomers, GC) | Sapropterin dihydrochloride (USAN) | (6R)-2...
- Saxagliptin (BMS-477118), Inhibitor of dipeptidyl peptidase 4CAS: 361442-04-8 EC Number: 111-193-7 PubChem CID: 11243969 Formula: C18H25N3O2 Molecular Weight: 315.41Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. 10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: S408204View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Onglyza | 2-Azabicyclo[3.1.0]hexane-3-carbonitrile, 2-[(2S)-2-amino-2-(3-hydroxytricyclo[3.3.1.13,7]dec-1-yl)acetyl]-...
- SangivamycinCAS: 18417-89-5 EC Number: 634-052-6 PubChem CID: 14978 Formula: C12H15N5O5 Molecular Weight: 309.28● In Stock — US warehouse, ships to EU* Item #: S339041View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-amino-7-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]pyrrolo[2,3-d]pyrimidine-5-carboxamide
- SMILES
- C1=C(C2=C(N=CN=C2N1C3C(C(C(O3)CO)O)O)N)C(=O)N
- InChIKey
- OBZJZDHRXBKKTJ-JTFADIMSSA-N
- InChI
- 1S/C12H15N5O5/c13-9-6-4(10(14)21)1-17(11(6)16-3-15-9)12-8(20)7(19)5(2-18)22-12/h1,3,5,7-8,12,18-20H,2H2,(H2,14,21)(H2,13,15,16)/t5-,7-,8-,12-/m1/s1
- Synonyms
- BRN 0626355 | 4-Amino-7-beta-D-ribofuranosyl-7H-pyrrolo(2,3-d)pyrimidine-5-carboxamide | 7H-Pyrrolo[2,3-d]pyrimidine-...
- Sanguinarine chloride hydrateCAS: 5578-73-4 EC Number: 621-641-8 PubChem CID: 68635 Formula: C20H14ClNO4 · xH2O Molecular Weight: 367.78(anhydrous basis)10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: S424745View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 24-methyl-5,7,18,20-tetraoxa-24-azoniahexacyclo[11.11.0.02,10.04,8.014,22.017,21]tetracosa-1(24),2,4(8),9,11,13,15,17(21),22-nonaene;chloride
- SMILES
- C[N+]1=C2C(=C3C=CC4=C(C3=C1)OCO4)C=CC5=CC6=C(C=C52)OCO6.[Cl-]
- InChIKey
- GIZKAXHWLRYMLE-UHFFFAOYSA-M
- InChI
- 1S/C20H14NO4.ClH/c1-21-8-15-12(4-5-16-20(15)25-10-22-16)13-3-2-11-6-17-18(24-9-23-17)7-14(11)19(13)21;/h2-8H,9-10H2,1H3;1H/q+1;/p-1
- Synonyms
- SANGUINARINE CHLORIDE | FD10130 | Q-100647 | (1,3)Benzodioxolo(5,6-c)-1,3-dioxolo(4,5-i)phenanthridinium, 13-methyl-,...
- Sanguinarine chloride hydrateCAS: 5578-73-4 EC Number: 621-641-8 PubChem CID: 68635 Formula: C20H14ClNO4 · xH2O Molecular Weight: 367.78(anhydrous basis)Analytical standard ? Analytical standard — certified-purity material for quantitative calibration. Use to prepare calibration standards and validate analytical methods. ≥98%(HPLC)● In Stock — US warehouse, ships to EU* Item #: S101539View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 24-methyl-5,7,18,20-tetraoxa-24-azoniahexacyclo[11.11.0.02,10.04,8.014,22.017,21]tetracosa-1(24),2,4(8),9,11,13,15,17(21),22-nonaene;chloride
- SMILES
- C[N+]1=C2C(=C3C=CC4=C(C3=C1)OCO4)C=CC5=CC6=C(C=C52)OCO6.[Cl-]
- InChIKey
- GIZKAXHWLRYMLE-UHFFFAOYSA-M
- InChI
- 1S/C20H14NO4.ClH/c1-21-8-15-12(4-5-16-20(15)25-10-22-16)13-3-2-11-6-17-18(24-9-23-17)7-14(11)19(13)21;/h2-8H,9-10H2,1H3;1H/q+1;/p-1
- Synonyms
- SANGUINARINE CHLORIDE | FD10130 | Q-100647 | (1,3)Benzodioxolo(5,6-c)-1,3-dioxolo(4,5-i)phenanthridinium, 13-methyl-,...
- Saracatinib (AZD0530), Tyrosine-protein kinase SRC inhibitorMoligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. 10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: S408594View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- N-(5-chlorobenzo[d][1,3]dioxol-4-yl)-7-(2-(4-methylpiperazin-1-yl)ethoxy)-5-(tetrahydro-2H-pyran-4-yloxy)quinazolin-4...
- Sauchinone10mM in DMSO● In Stock — US warehouse, ships to EU* Item #: S422166View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (1S,12R,13S,14R,16R,23R)-13,14-dimethyl-2,6,8,20,22-pentaoxahexacyclo[10.10.1.01,19.03,11.05,9.016,23]tricosa-3,5(9),10,18-tetraen-17-one
- SMILES
- CC1CC2C3C(C1C)C4=CC5=C(C=C4OC36C(=CC2=O)OCO6)OCO5
- InChIKey
- GMTJIWUFFXGFHH-WPAOEJHSSA-N
- InChI
- show more
- Synonyms
- sauchinone | SCHEMBL1498622 | AS-77171 | MFCD08702698 | AKOS030631736 | AC-34741 | J-011331 | (1S,12R,13S,14R,16R,23R...
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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.