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
24,639Navigate 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
- 4-[(1,3-Benzoxazol-2-ylsulfanyl)methyl]benzoic acidFormula: C15H11NO3S Molecular Weight: 285.3◐ Made to order · 8–12 wks Item #: B668317View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-(1,3-benzoxazol-2-ylsulfanylmethyl)benzoic acid
- SMILES
- C1=CC=C2C(=C1)N=C(O2)SCC3=CC=C(C=C3)C(=O)O
- InChIKey
- XCKAGLDDLJTRBV-UHFFFAOYSA-N
- InChI
- 1S/C15H11NO3S/c17-14(18)11-7-5-10(6-8-11)9-20-15-16-12-3-1-2-4-13(12)19-15/h1-8H,9H2,(H,17,18)
- Synonyms
- 4-[(1,3-Benzoxazol-2-ylsulfanyl)methyl]benzoic acid|Cambridge id 6953089|4-[(1,3-benzoxazol-2-ylthio)methyl]benzoic a...
- 4-[2-[4-(3-Pyridin-4-ylpyrazolo[1,5-a]pyrimidin-6-yl)phenoxy]ethyl]morpholine◐ Made to order · 8–12 wks Item #: P668921View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-[2-[4-(3-pyridin-4-ylpyrazolo[1,5-a]pyrimidin-6-yl)phenoxy]ethyl]morpholine
- SMILES
- C1COCCN1CCOC2=CC=C(C=C2)C3=CN4C(=C(C=N4)C5=CC=NC=C5)N=C3
- InChIKey
- OOQJIJYKWXLQNC-UHFFFAOYSA-N
- InChI
- 1S/C23H23N5O2/c1-3-21(30-14-11-27-9-12-29-13-10-27)4-2-18(1)20-15-25-23-22(16-26-28(23)17-20)19-5-7-24-8-6-19/h1-8,15-17H,9-14H2
- Synonyms
- pyrazolo[1,5-a]pyrimidine 4h|4-[2-[4-(3-pyridin-4-ylpyrazolo[1,5-a]pyrimidin-6-yl)phenoxy]ethyl]morpholine|Pyrazolo[1...
- 4-[3-(1h-Imidazol-4-yl)propyl]piperidineCAS: 768358-61-8 Formula: C11H19N3 Molecular Weight: 193.29◐ Made to order · 8–12 wks Item #: H669087View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-[3-(1H-imidazol-5-yl)propyl]piperidine
- SMILES
- C1CNCCC1CCCC2=CN=CN2
- InChIKey
- YPGRNKJNOSUCLY-UHFFFAOYSA-N
- InChI
- 1S/C11H19N3/c1(3-11-8-13-9-14-11)2-10-4-6-12-7-5-10/h8-10,12H,1-7H2,(H,13,14)
- Synonyms
- 4-[3-(1h-imidazol-4-yl)propyl]piperidine|VUF-5681|4-[3-(1H-imidazol-5-yl)propyl]piperidine|4-[3-(1H-IMIDAZOL-4-YL)-PR...
- 4-[2-Amino-4-Methyl-3-(2-Methylquinolin-6-Yl)benzoyl]-1-Methyl-2,5-Diphenyl-1,2-Dihydro-3h-Pyrazol-3-OneFormula: C34H28N4O2 Molecular Weight: 524.6◐ Made to order · 8–12 wks Item #: A669281View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-[2-amino-4-methyl-3-(2-methylquinolin-6-yl)benzoyl]-1-methyl-2,5-diphenylpyrazol-3-one
- SMILES
- CC1=C(C(=C(C=C1)C(=O)C2=C(N(N(C2=O)C3=CC=CC=C3)C)C4=CC=CC=C4)N)C5=CC6=C(C=C5)N=C(C=C6)C
- InChIKey
- YPPSMYLMSKHYAY-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- 4-[2-Amino-4-Methyl-3-(2-Methylquinolin-6-Yl)benzoyl]-1-Methyl-2,5-Diphenyl-1,2-Dihydro-3h-Pyrazol-3-One|AMG-PERK-44
- 4-[8-(2,1,3-Benzoxadiazol-5-yl)-1,7-naphthyridin-6-yl]benzoic acid◐ Made to order · 8–12 wks Item #: B669007View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-[8-(2,1,3-benzoxadiazol-5-yl)-1,7-naphthyridin-6-yl]benzoic acid
- SMILES
- C1=CC2=CC(=NC(=C2N=C1)C3=CC4=NON=C4C=C3)C5=CC=C(C=C5)C(=O)O
- InChIKey
- IALXIRPKVRUJQO-UHFFFAOYSA-N
- InChI
- 1S/C21H12N4O3/c26-21(27)13-5-3-12(4-6-13)17-10-14-2-1-9-22-19(14)20(23-17)15-7-8-16-18(11-15)25-28-24-16/h1-11H,(H,26,27)
- Synonyms
- 4-[8-(2,1,3-benzoxadiazol-5-yl)-1,7-naphthyridin-6-yl]benzoic acid|4-(8-(benzo[c][1,2,5]oxadiazol-5-yl)-1,7-naphthyri...
- 4-fluoro-N-(4-sulfamoylphenyl)benzenesulfonamideCAS: 250210-24-3 Formula: C12H11FN2O4S2 Molecular Weight: 330.4◐ Made to order · 8–12 wks Item #: F668476View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-[(4-fluorophenyl)sulfonylamino]benzenesulfonamide
- SMILES
- C1=CC(=CC=C1NS(=O)(=O)C2=CC=C(C=C2)F)S(=O)(=O)N
- InChIKey
- USGGSIVMQBZIHX-UHFFFAOYSA-N
- InChI
- 1S/C12H11FN2O4S2/c13-9-1-5-12(6-2-9)21(18,19)15-10-3-7-11(8-4-10)20(14,16)17/h1-8,15H,(H2,14,16,17)
- Synonyms
- 4-fluoro-N-(4-sulfamoylphenyl)benzenesulfonamide|N-[4-(aminosulfonyl)phenyl]-4-fluorobenzenesulfonamide|4-[(4-fluorop...
- 4-fluoro-N-(4-sulfamoylbenzyl)benzenesulfonamideCAS: 333442-92-5 Formula: C13H13FN2O4S2 Molecular Weight: 344.4◐ Made to order · 8–12 wks Item #: F668517View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-[[(4-fluorophenyl)sulfonylamino]methyl]benzenesulfonamide
- SMILES
- C1=CC(=CC=C1CNS(=O)(=O)C2=CC=C(C=C2)F)S(=O)(=O)N
- InChIKey
- RXAAVLURIXEENO-UHFFFAOYSA-N
- InChI
- 1S/C13H13FN2O4S2/c14-11-3-7-13(8-4-11)22(19,20)16-9-10-1-5-12(6-2-10)21(15,17)18/h1-8,16H,9H2,(H2,15,17,18)
- Synonyms
- 4-fluoro-N-(4-sulfamoylbenzyl)benzenesulfonamide|4-(((4-Fluorophenyl)sulfonylamino)methyl)benzenesulfonamide|N-((4-(A...
- 4-butyl-1-sulfanyl-4H,5H-[1,2,4]triazolo[4,3-a]quinazolin-5-one◐ Made to order · 8–12 wks Item #: B668672View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-butyl-1-sulfanylidene-2H-[1,2,4]triazolo[4,3-a]quinazolin-5-one
- SMILES
- CCCCN1C(=O)C2=CC=CC=C2N3C1=NNC3=S
- InChIKey
- NURBAHNZLYZFMA-UHFFFAOYSA-N
- InChI
- 1S/C13H14N4OS/c1-2-3-8-16-11(18)9-6-4-5-7-10(9)17-12(16)14-15-13(17)19/h4-7H,2-3,8H2,1H3,(H,15,19)
- Synonyms
- 4-butyl-1-sulfanyl-4H,5H-[1,2,4]triazolo[4,3-a]quinazolin-5-one|4-butyl-1-sulfanylidene-2H-[1,2,4]triazolo[4,3-a]quin...
- 4-[Benzo(b)thiophen-2-yl]phenol◐ Made to order · 8–12 wks Item #: B669079View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-(1-benzothiophen-2-yl)phenol
- SMILES
- C1=CC=C2C(=C1)C=C(S2)C3=CC=C(C=C3)O
- InChIKey
- BTHAMNJTBJFIQX-UHFFFAOYSA-N
- InChI
- 1S/C14H10OS/c15-12-7-5-10(6-8-12)14-9-11-3-1-2-4-13(11)16-14/h1-9,15H
- Synonyms
- 4-[Benzo(b)thiophen-2-yl]phenol|4-(1-BENZOTHIOPHEN-2-YL)PHENOL|2-(4-hydroxyphenyl)benzothiophene
- 4-hydroxy-3-[(4-hydroxy-2-oxo-2H-chromen-3-yl)(thiophen-2-yl)methyl]-2H-chromen-2-one◐ Made to order · 8–12 wks Item #: H669268View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-hydroxy-3-[(4-hydroxy-2-oxochromen-3-yl)-thiophen-2-ylmethyl]chromen-2-one
- SMILES
- C1=CC=C2C(=C1)C(=C(C(=O)O2)C(C3=CC=CS3)C4=C(C5=CC=CC=C5OC4=O)O)O
- InChIKey
- VGJKTZUBVAMNAZ-UHFFFAOYSA-N
- InChI
- 1S/C23H14O6S/c24-20-12-6-1-3-8-14(12)28-22(26)18(20)17(16-10-5-11-30-16)19-21(25)13-7-2-4-9-15(13)29-23(19)27/h1-11,17,24-25H
- Synonyms
- 4-hydroxy-3-[(4-hydroxy-2-oxo-2H-chromen-3-yl)(thiophen-2-yl)methyl]-2H-chromen-2-one|3,3'-(thiophen-2-ylmethanediyl)...
- 4-Methyl-N-(4-oxo-4H-benzo[d][1,3]thiazin-2-yl)-benzamideCAS: 178675-07-5 Formula: C16H12N2O2S Molecular Weight: 296.3◐ Made to order · 8–12 wks Item #: M668349View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-methyl-N-(4-oxo-3,1-benzothiazin-2-yl)benzamide
- SMILES
- CC1=CC=C(C=C1)C(=O)NC2=NC3=CC=CC=C3C(=O)S2
- InChIKey
- SOQQRPCGIHRQQC-UHFFFAOYSA-N
- InChI
- 1S/C16H12N2O2S/c1-10-6-8-11(9-7-10)14(19)18-16-17-13-5-3-2-4-12(13)15(20)21-16/h2-9H,1H3,(H,17,18,19)
- Synonyms
- 4-Methyl-N-(4-oxo-4H-benzo[d][1,3]thiazin-2-yl)-benzamide|4-methyl-N-(4-oxo-4H-3,1-benzothiazin-2-yl)benzamide|4-meth...
- 4-[(E)-2-(3,5-dimethoxyphenyl)ethenyl]-2-methoxyphenolCAS: 108957-72-8 Formula: C17H18O4 Molecular Weight: 286.32◐ Made to order · 8–12 wks Item #: E668953View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-[(E)-2-(3,5-dimethoxyphenyl)ethenyl]-2-methoxyphenol
- SMILES
- COC1=CC(=CC(=C1)C=CC2=CC(=C(C=C2)O)OC)OC
- InChIKey
- QEHTYBCDRGQJGN-SNAWJCMRSA-N
- InChI
- 1S/C17H18O4/c1-19-14-8-13(9-15(11-14)20-2)5-4-12-6-7-16(18)17(10-12)21-3/h4-11,18H,1-3H3/b5-4+
- Synonyms
- 4-[(E)-2-(3,5-dimethoxyphenyl)ethenyl]-2-methoxyphenol|4-[(E)-2-(3,5-dimethoxyphenyl)ethenyl]-2-methoxy-phenol|(E)-4'...
![4-[(1,3-Benzoxazol-2-ylsulfanyl)methyl]benzoic acid - CAS No(B668317) by Aladdin Scientific](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/B/6/B668317.jpg)
![4-[2-[4-(3-Pyridin-4-ylpyrazolo[1,5-a]pyrimidin-6-yl)phenoxy]ethyl]morpholine - CAS No(597544-21-3) by Aladdin Scientific](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/P/6/P668921.jpg)
![4-[3-(1h-Imidazol-4-yl)propyl]piperidine - CAS No(768358-61-8) by Aladdin Scientific](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/H/6/H669087.jpg)
![4-[2-Amino-4-Methyl-3-(2-Methylquinolin-6-Yl)benzoyl]-1-Methyl-2,5-Diphenyl-1,2-Dihydro-3h-Pyrazol-3-One - CAS No(A669281) by Aladdin Scientific](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/A/6/A669281.jpg)
![4-[8-(2,1,3-Benzoxadiazol-5-yl)-1,7-naphthyridin-6-yl]benzoic acid - CAS No(426268-06-6) by Aladdin Scientific](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/B/6/B669007.jpg)
![4-butyl-1-sulfanyl-4H,5H-[1,2,4]triazolo[4,3-a]quinazolin-5-one - CAS No(749920-43-2) by Aladdin Scientific](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/B/6/B668672.jpg)
![4-[Benzo(b)thiophen-2-yl]phenol - CAS No(65540-08-1) by Aladdin Scientific](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/B/6/B669079.jpg)
![4-hydroxy-3-[(4-hydroxy-2-oxo-2H-chromen-3-yl)(thiophen-2-yl)methyl]-2H-chromen-2-one - CAS No(15938-73-5) by Aladdin Scientific](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/H/6/H669268.jpg)
![4-Methyl-N-(4-oxo-4H-benzo[d][1,3]thiazin-2-yl)-benzamide - CAS No(178675-07-5) by Aladdin Scientific](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/M/6/M668349.jpg)
![4-[(E)-2-(3,5-dimethoxyphenyl)ethenyl]-2-methoxyphenol - CAS No(108957-72-8) by Aladdin Scientific](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/E/6/E668953.jpg)
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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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