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).
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Ligand families
24,653Navigate 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
102,663Explore 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
- Rhosin hydrochloride● In Stock — US Item #: R286684View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2R)-2-amino-3-(1H-indol-3-yl)-N-[(E)-quinoxalin-6-ylmethylideneamino]propanamide;hydrochloride
- SMILES
- C1=CC=C2C(=C1)C(=CN2)CC(C(=O)NN=CC3=CC4=NC=CN=C4C=C3)N.Cl
- InChIKey
- SFRGBDFQSLZYLF-GRYLRVQNSA-N
- InChI
- show more
- Synonyms
- D-Tryptophan (2E)-2-(6-quinoxalinylmethylene)hydrazide hydrochloride | (R,E)-2-amino-3-(1H-indol-3-yl)-N'-(quinoxalin...
- SB 258585 hydrochloride● In Stock — US Item #: S288101View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-iodo-N-[4-methoxy-3-(4-methylpiperazin-1-yl)phenyl]benzenesulfonamide;hydrochloride
- SMILES
- CN1CCN(CC1)C2=C(C=CC(=C2)NS(=O)(=O)C3=CC=C(C=C3)I)OC.Cl
- InChIKey
- BFGOZFXMAJBFGI-UHFFFAOYSA-N
- InChI
- 1S/C18H22IN3O3S.ClH/c1-21-9-11-22(12-10-21)17-13-15(5-8-18(17)25-2)20-26(23,24)16-6-3-14(19)4-7-16;/h3-8,13,20H,9-12H2,1-2H3;1H
- Synonyms
- 4-Iodo-N-[4-methoxy-3-(4-methyl-1-piperazinyl)phenyl]benzenesulfonamide hydrochloride
- SB 258719 hydrochloride◐ .Made to order · 8–12 wks Item #: S287550View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N,3-dimethyl-N-[(2R)-4-(4-methylpiperidin-1-yl)butan-2-yl]benzenesulfonamide;hydrochloride
- SMILES
- CC1CCN(CC1)CCC(C)N(C)S(=O)(=O)C2=CC=CC(=C2)C.Cl
- InChIKey
- UIZKHTBWJSUGOV-UNTBIKODSA-N
- InChI
- 1S/C18H30N2O2S.ClH/c1-15-8-11-20(12-9-15)13-10-17(3)19(4)23(21,22)18-7-5-6-16(2)14-18;/h5-7,14-15,17H,8-13H2,1-4H3;1H/t17-;/m1./s1
- Synonyms
- AKOS024457260 | SB 258719 hydrochloride | SCHEMBL3688509 | SB258719 hydrochloride | SB-258719 hydrochloride | 3-METHY...
- SB 271046 hydrochlorideCAS: 209481-24-3 Formula: C20H22CIN3O3S2.HCl Molecular Weight: 488.45● In Stock — US Item #: S274991View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 5-chloro-N-(4-methoxy-3-piperazin-1-ylphenyl)-3-methyl-1-benzothiophene-2-sulfonamide;hydrochloride
- SMILES
- CC1=C(SC2=C1C=C(C=C2)Cl)S(=O)(=O)NC3=CC(=C(C=C3)OC)N4CCNCC4.Cl
- InChIKey
- RMXZRJYGJMSDQK-UHFFFAOYSA-N
- InChI
- 1S/C20H22ClN3O3S2.ClH/c1-13-16-11-14(21)3-6-19(16)28-20(13)29(25,26)23-15-4-5-18(27-2)17(12-15)24-9-7-22-8-10-24;/h3-6,11-12,22-23H,7-10H2,1-2H3;1H
- Synonyms
- 4-Vinylphenyl acetate # | C20H23Cl2N3O3S2 | SS-4788 | BCP12719 | Benzo(b)thiophene-2-sulfonamide, 5-chloro-N-(4-metho...
- SB 332235◐ .Made to order · 8–12 wks Item #: S287226View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-(4-chloro-2-hydroxy-3-sulfamoylphenyl)-3-(2,3-dichlorophenyl)urea
- SMILES
- C1=CC(=C(C(=C1)Cl)Cl)NC(=O)NC2=C(C(=C(C=C2)Cl)S(=O)(=O)N)O
- InChIKey
- WTLRWOHEKQGKDS-UHFFFAOYSA-N
- InChI
- 1S/C13H10Cl3N3O4S/c14-6-2-1-3-8(10(6)16)18-13(21)19-9-5-4-7(15)12(11(9)20)24(17,22)23/h1-5,20H,(H2,17,22,23)(H2,18,19,21)
- Synonyms
- 6-chloro-3-(3-(2,3-dichlorophenyl)ureido)-2-hydroxybenzenesulfonamide | N-(4-Chloro-2-hydroxy-3-aminosulfonylphenyl)-...
- Norethindrone, Progesterone receptor agonistSolid 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 Item #: N129448View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (8R,9S,10R,13S,14S,17R)-17-ethynyl-17-hydroxy-13-methyl-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one
- SMILES
- CC12CCC3C(C1CCC2(C#C)O)CCC4=CC(=O)CCC34
- InChIKey
- VIKNJXKGJWUCNN-XGXHKTLJSA-N
- InChI
- 1S/C20H26O2/c1-3-20(22)11-9-18-17-6-4-13-12-14(21)5-7-15(13)16(17)8-10-19(18,20)2/h1,12,15-18,22H,4-11H2,2H3/t15-,16+,17+,18-,19-,20-/m0/s1
- Synonyms
- SC 4640 | Brevinor-1 28 | Estrinor | Nodiol | Norcolut | Norethynodron | Norethynodrone | Triella | BRN 1915671 | Nor...
- SB 399885 hydrochloride● In Stock — US Item #: S287192View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-(3,5-dichloro-2-methoxyphenyl)-4-methoxy-3-piperazin-1-ylbenzenesulfonamide;hydrochloride
- SMILES
- COC1=C(C=C(C=C1)S(=O)(=O)NC2=C(C(=CC(=C2)Cl)Cl)OC)N3CCNCC3.Cl
- InChIKey
- RNKCEBCFUSXSQE-UHFFFAOYSA-N
- InChI
- 1S/C18H21Cl2N3O4S.ClH/c1-26-17-4-3-13(11-16(17)23-7-5-21-6-8-23)28(24,25)22-15-10-12(19)9-14(20)18(15)27-2;/h3-4,9-11,21-22H,5-8H2,1-2H3;1H
- Synonyms
- RNKCEBCFUSXSQE-UHFFFAOYSA-N | SB 399885 HYDROCHLORIDE | SB399885 HCl | SB-399885 HCl | N-(3,5-dichloro-2-methoxy-phen...
- Naphthalen-1-ylmethanamine hydrochlorideCAS: 39110-74-2 Formula: C11H12ClN Molecular Weight: 193.67● In Stock — US Item #: N303625View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- naphthalen-1-ylmethanamine;hydrochloride
- SMILES
- C1=CC=C2C(=C1)C=CC=C2CN.Cl
- InChIKey
- NEXZCFUBZJBRCP-UHFFFAOYSA-N
- InChI
- 1S/C11H11N.ClH/c12-8-10-6-3-5-9-4-1-2-7-11(9)10;/h1-7H,8,12H2;1H
- Synonyms
- 1-naphthalenemethylamine hydrochloride | 1-Naphthalenemethylamine HCl | 1-(Aminomethyl)naphthalene Hydrochloride | na...
- NaphthofluoresceinCAS: 61419-02-1 Formula: C28H16O5 Molecular Weight: 432.42● In Stock — US Item #: N131531View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 7',19'-dihydroxyspiro[2-benzofuran-3,13'-2-oxapentacyclo[12.8.0.03,12.04,9.017,22]docosa-1(14),3(12),4(9),5,7,10,15,17(22),18,20-decaene]-1-one
- SMILES
- C1=CC=C2C(=C1)C(=O)OC23C4=C(C5=C(C=C4)C=C(C=C5)O)OC6=C3C=CC7=C6C=CC(=C7)O
- InChIKey
- IXQIUDNVFVTQLJ-UHFFFAOYSA-N
- InChI
- 1S/C28H16O5/c29-17-7-9-19-15(13-17)5-11-23-25(19)32-26-20-10-8-18(30)14-16(20)6-12-24(26)28(23)22-4-2-1-3-21(22)27(31)33-28/h1-14,29-30H
- Synonyms
- MFCD00329026 | 3',11'-dihydroxy-3H-spiro[2-benzofuran-1,7'-dibenzo[c,h]xanthen]-3-one | DTXSID80886440 | AKOS00050808...
- Salubrinal● In Stock — US Item #: S125512View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (E)-3-phenyl-N-[2,2,2-trichloro-1-(quinolin-8-ylcarbamothioylamino)ethyl]prop-2-enamide
- SMILES
- C1=CC=C(C=C1)C=CC(=O)NC(C(Cl)(Cl)Cl)NC(=S)NC2=CC=CC3=C2N=CC=C3
- InChIKey
- LCOIAYJMPKXARU-VAWYXSNFSA-N
- InChI
- 1S/C21H17Cl3N4OS/c22-21(23,24)19(27-17(29)12-11-14-6-2-1-3-7-14)28-20(30)26-16-10-4-8-15-9-5-13-25-18(15)16/h1-13,19H,(H,27,29)(H2,26,28,30)/b12-11+
- Synonyms
- AC-33176 | (2E)-3-phenyl-N-{2,2,2-trichloro-1-[(quinolin-8-ylcarbamothioyl)amino]ethyl}prop-2-enamide | F0095-1218 | ...
- Astaxanthin≥95%(HPLC),mixture of cis and trans● In Stock — US Item #: A141428View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC1=C(C(CC(C1=O)O)(C)C)C=CC(=CC=CC(=CC=CC=C(C)C=CC=C(C)C=CC2=C(C(=O)C(CC2(C)C)O)C)C)C
- InChIKey
- MQZIGYBFDRPAKN-UWFIBFSHSA-N
- InChI
- show more
- Synonyms
- DTXSID00893777 | Natupink | UNII-8XPW32PR7I | .beta.-Carotene-4,4'-dione, 3,3'-dihydroxy-, all-trans- | BCP05821 | CH...
- Sanguinarine chloride hydrateCAS: 5578-73-4 EC Number: 621-641-8 PubChem CID: 68635 Formula: C20H14ClNO4 · xH2O Molecular Weight: 367.78(anhydrous basis)● In Stock — US Item #: S101540View 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-,...
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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.
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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.