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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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 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 to assemble or screen PROTAC designs, with clear identifiers for efficient selection.
By Signaling Pathways
102,620Explore 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)
19,695Find 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
- 1H,1H-Perfluoro-3,6,9-trioxatridecan-1-olCAS: 317817-24-6 Formula: C10H3F19O4 Molecular Weight: 548.10● In Stock — US Item #: H331558View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2,2-difluoro-2-[1,1,2,2-tetrafluoro-2-[1,1,2,2-tetrafluoro-2-(1,1,2,2,3,3,4,4,4-nonafluorobutoxy)ethoxy]ethoxy]ethanol
- SMILES
- C(C(OC(C(OC(C(OC(C(C(C(F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)O
- InChIKey
- WDIFKQOHZPTQIR-UHFFFAOYSA-N
- InChI
- 1S/C10H3F19O4/c11-2(12,1-30)31-7(22,23)8(24,25)33-10(28,29)9(26,27)32-6(20,21)4(15,16)3(13,14)5(17,18)19/h30H,1H2
- Synonyms
- AKOS025310037 | FS-4148 | 2,2-difluoro-2-[1,1,2,2-tetrafluoro-2-[1,1,2,2-tetrafluoro-2-(1,1,2,2,3,3,4,4,4-nonafluorob...
- 1H,1H-Perfluoro-3,6-dioxadecan-1-olCAS: 152914-73-3 Formula: C8H3F15O3 Molecular Weight: 432.09◐ .Made to order · 8–12 wks Item #: H331581View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2,2-difluoro-2-[1,1,2,2-tetrafluoro-2-(1,1,2,2,3,3,4,4,4-nonafluorobutoxy)ethoxy]ethanol
- SMILES
- C(C(OC(C(OC(C(C(C(F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)O
- InChIKey
- ZPLAXWXACBJHSW-UHFFFAOYSA-N
- InChI
- 1S/C8H3F15O3/c9-2(10,1-24)25-7(20,21)8(22,23)26-6(18,19)4(13,14)3(11,12)5(15,16)17/h24H,1H2
- Synonyms
- DTXSID50381038 | AKOS015910950 | A809357 | 2,2-difluoro-2-[1,1,2,2-tetrafluoro-2-(1,1,2,2,3,3,4,4,4-nonafluorobutoxy)...
- 1H,2H,3H,3H-Perfluoro-1,2-epoxytridecaneCAS: 38565-54-7 Formula: C13H5F21O Molecular Weight: 576.148● In Stock — US Item #: H332150View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-(2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11-henicosafluoroundecyl)oxirane
- SMILES
- C1C(O1)CC(C(C(C(C(C(C(C(C(C(F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F
- InChIKey
- KVLHRMQNRDJRKW-UHFFFAOYSA-N
- InChI
- 1S/C13H5F21O/c14-4(15,1-3-2-35-3)5(16,17)6(18,19)7(20,21)8(22,23)9(24,25)10(26,27)11(28,29)12(30,31)13(32,33)34/h3H,1-2H2
- Synonyms
- ((Perfluorodecyl)methyl)oxirane | A824197 | 2-[2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11-henicosakis(fluoranyl)u...
- 2,4,5,6-Tetrahydropyrrolo[3,4-c]pyrazoleCAS: 6573-19-9 Formula: C5H7N3 Molecular Weight: 109.13Solid ≥95%◐ .Made to order · 8–12 wks Item #: H304301View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1,4,5,6-tetrahydropyrrolo[3,4-c]pyrazole
- SMILES
- C1C2=C(CN1)NN=C2
- InChIKey
- CVRWHBCQJCUBFE-UHFFFAOYSA-N
- InChI
- 1S/C5H7N3/c1-4-2-7-8-5(4)3-6-1/h2,6H,1,3H2,(H,7,8)
- Synonyms
- 1H,4H,5H,6H-pyrrolo[3,4-c]pyrazole | 1,4,5,6-Tetrahydropyrrolo[3,4-c]pyrazole
- 1H,4H-OctafluorobutaneCAS: 377-36-6 Formula: C4H2F8 Molecular Weight: 202.05● In Stock — US Item #: H332934View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1,1,2,2,3,3,4,4-octafluorobutane
- SMILES
- C(C(C(C(F)F)(F)F)(F)F)(F)F
- InChIKey
- LKLFXAVIFCLZQS-UHFFFAOYSA-N
- InChI
- 1S/C4H2F8/c5-1(6)3(9,10)4(11,12)2(7)8/h1-2H
- Synonyms
- SCHEMBL333613 | A823844 | 1H,4H-Octafluorobutane (HFC-338mee) | 1h,4h-octafluorobutane | 1h,4h-octafluoro-butane | LK...
- 2'-Deoxy-5-methylcytidine10mM in DMSO● In Stock — US Item #: D426177View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-amino-1-[(2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-methylpyrimidin-2-one
- SMILES
- CC1=CN(C(=O)N=C1N)C2CC(C(O2)CO)O
- InChIKey
- LUCHPKXVUGJYGU-XLPZGREQSA-N
- InChI
- 1S/C10H15N3O4/c1-5-3-13(10(16)12-9(5)11)8-2-6(15)7(4-14)17-8/h3,6-8,14-15H,2,4H2,1H3,(H2,11,12,16)/t6-,7+,8+/m0/s1
- Synonyms
- AC-8204 | (7R,8S)-4-Chloro-8-methyl-7-(3-methyl-but-2-enyl)-6,7,8,9-tetrahydro-2H-2,7,9a-triaza-benzo[cd]azulene-1-th...
- 1′-methyl-3,4-dihydrospiro[chromene-2,4′-piperidin]-4-amine hydrochloride◐ .Made to order · 8–12 wks Item #: M332100View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1'-methylspiro[3,4-dihydrochromene-2,4'-piperidine]-4-amine;hydrochloride
- SMILES
- CN1CCC2(CC1)CC(C3=CC=CC=C3O2)N.Cl
- InChIKey
- NNVNAJGCZFCILW-UHFFFAOYSA-N
- InChI
- 1S/C14H20N2O.ClH/c1-16-8-6-14(7-9-16)10-12(15)11-4-2-3-5-13(11)17-14;/h2-5,12H,6-10,15H2,1H3;1H
- Synonyms
- 1'-Methylspiro[chroman-2,4'-piperidin]-4-amine hydrochloride | 1193389-01-3 | 1'-Methyl-3,4-dihydrospiro[chromene-2,4...
- 1-N-(4,4'-Dimethoxytrityl)-D-(+)-biotin● In Stock — US Item #: N357919View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 5-[(3aR,6S,6aS)-3-[bis(4-methoxyphenyl)-phenylmethyl]-2-oxo-3a,4,6,6a-tetrahydro-1H-thieno[3,4-d]imidazol-6-yl]pentanoic acid
- SMILES
- COC1=CC=C(C=C1)C(C2=CC=CC=C2)(C3=CC=C(C=C3)OC)N4C5CSC(C5NC4=O)CCCCC(=O)O
- InChIKey
- RMWVJZXKPGLZEJ-YCVJPRETSA-N
- InChI
- show more
- Synonyms
- D-Biotin 4,4′-dimethoxytrityl ester | DMT-Biotin
- 2'-Deoxycytidine-5'-triphosphate [dCTP] trisodium salt solution● In Stock — US Item #: D276533View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- trisodium;[[[(2R,3S,5R)-5-(4-amino-2-oxopyrimidin-1-yl)-3-hydroxyoxolan-2-yl]methoxy-oxidophosphoryl]oxy-oxidophosphoryl] hydrogen phosphate
- SMILES
- C1C(C(OC1N2C=CC(=NC2=O)N)COP(=O)([O-])OP(=O)([O-])OP(=O)(O)[O-])O.[Na+].[Na+].[Na+]
- InChIKey
- WBIPTAOOMJEGQO-MILVPLDLSA-K
- InChI
- show more
- Synonyms
- Sodium ((2R,3S,5R)-5-(4-amino-2-oxopyrimidin-1(2H)-yl)-3-hydroxytetrahydrofuran-2-yl)methyl hydrogen triphosphate | D...
- 1′-methyl-3,4-dihydrospiro[chromene-2,4′-piperidin]-4-amine hydrochloride10mM in DMSO◐ .Made to order · 8–12 wks Item #: M425610View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1'-methylspiro[3,4-dihydrochromene-2,4'-piperidine]-4-amine;hydrochloride
- SMILES
- CN1CCC2(CC1)CC(C3=CC=CC=C3O2)N.Cl
- InChIKey
- NNVNAJGCZFCILW-UHFFFAOYSA-N
- InChI
- 1S/C14H20N2O.ClH/c1-16-8-6-14(7-9-16)10-12(15)11-4-2-3-5-13(11)17-14;/h2-5,12H,6-10,15H2,1H3;1H
- Synonyms
- 1'-Methylspiro[chroman-2,4'-piperidin]-4-amine hydrochloride | 1193389-01-3 | 1'-Methyl-3,4-dihydrospiro[chromene-2,4...
- 2,2'-Dithiobis(pyridine-N-oxide)Solid ≥98%● In Stock — US Item #: D303570View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-oxido-2-[(1-oxidopyridin-1-ium-2-yl)disulfanyl]pyridin-1-ium
- SMILES
- C1=CC=[N+](C(=C1)SSC2=CC=CC=[N+]2[O-])[O-]
- InChIKey
- ZHDBTKPXEJDTTQ-UHFFFAOYSA-N
- InChI
- 1S/C10H8N2O2S2/c13-11-7-3-1-5-9(11)15-16-10-6-2-4-8-12(10)14/h1-8H
- Synonyms
- 1-oxido-2-[(1-oxidopyridin-1-ium-2-yl)disulfanyl]pyridin-1-ium | BISPYRITHIONE [INCI] | 2,2'-Dithiobis(pyridine) 1,1'...
- 2'-MeCCPACAS: 205171-12-6 Formula: C16H22ClN5O4 Molecular Weight: 383.83● In Stock — US Item #: M287948View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-[2-chloro-6-(cyclopentylamino)purin-9-yl]-5-(hydroxymethyl)-3-methyloxolane-3,4-diol
- SMILES
- CC1(C(C(OC1N2C=NC3=C(N=C(N=C32)Cl)NC4CCCC4)CO)O)O
- InChIKey
- MMPAUXMIDJWGFO-UHFFFAOYSA-N
- InChI
- 1S/C16H22ClN5O4/c1-16(25)11(24)9(6-23)26-14(16)22-7-18-10-12(19-8-4-2-3-5-8)20-15(17)21-13(10)22/h7-9,11,14,23-25H,2-6H2,1H3,(H,19,20,21)
- Synonyms
- 2-[2-chloro-6-(cyclopentylamino)purin-9-yl]-5-(hydroxymethyl)-3-methyloxolane-3,4-diol | 2-[2-chloro-6-(cyclopentylam...
![2,4,5,6-Tetrahydropyrrolo[3,4-c]pyrazole - ≥95% CAS No(6573-19-9) by Aladdin Scientific](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/H/3/H304301.png)
![1′-methyl-3,4-dihydrospiro[chromene-2,4′-piperidin]-4-amine hydrochloride](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/M/3/M332100.png)
![2'-Deoxycytidine-5'-triphosphate [dCTP] trisodium salt solution](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/D/2/D276533.png)
![1′-methyl-3,4-dihydrospiro[chromene-2,4′-piperidin]-4-amine hydrochloride](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/M/4/M425610.png)
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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.
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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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