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 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
- Fmoc-(S)-2-amino-3-methoxypropionic acid◐ .Made to order · 8–12 wks Item #: F383347View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2S)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-3-methoxypropanoic acid
- SMILES
- COCC(C(=O)O)NC(=O)OCC1C2=CC=CC=C2C3=CC=CC=C13
- InChIKey
- YFWAFELGMGZCHL-KRWDZBQOSA-N
- InChI
- 1S/C19H19NO5/c1-24-11-17(18(21)22)20-19(23)25-10-16-14-8-4-2-6-12(14)13-7-3-5-9-15(13)16/h2-9,16-17H,10-11H2,1H3,(H,20,23)(H,21,22)/t17-/m0/s1
- Synonyms
- (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-methoxypropanoic acid | (S)-2-((((9H-Fluoren-9-yl)methoxy)carbony...
- LDC 000067● In Stock — US Item #: L288036View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- [3-[[6-(2-methoxyphenyl)pyrimidin-4-yl]amino]phenyl]methanesulfonamide
- SMILES
- COC1=CC=CC=C1C2=CC(=NC=N2)NC3=CC=CC(=C3)CS(=O)(=O)N
- InChIKey
- GGQCIOOSELPMBB-UHFFFAOYSA-N
- InChI
- 1S/C18H18N4O3S/c1-25-17-8-3-2-7-15(17)16-10-18(21-12-20-16)22-14-6-4-5-13(9-14)11-26(19,23)24/h2-10,12H,11H2,1H3,(H2,19,23,24)(H,20,21,22)
- Synonyms
- BDBM50013510 | BCP10866 | 3-(2-(Dimethylamino)ethyl)-N-methylindole-5-methanesulfonamide | MFCD28137788 | 3-[[6-(2-Me...
- Fmoc-(2S,3S)-3-hydroxypyrrolidine-2-carboxylicacidCAS: 296774-32-8 Formula: C20H19NO5 Molecular Weight: 353.38● In Stock — US Item #: F339964View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2S,3S)-1-(9H-fluoren-9-ylmethoxycarbonyl)-3-hydroxypyrrolidine-2-carboxylic acid
- SMILES
- C1CN(C(C1O)C(=O)O)C(=O)OCC2C3=CC=CC=C3C4=CC=CC=C24
- InChIKey
- NQSYYVTUCHIRTM-ROUUACIJSA-N
- InChI
- 1S/C20H19NO5/c22-17-9-10-21(18(17)19(23)24)20(25)26-11-16-14-7-3-1-5-12(14)13-6-2-4-8-15(13)16/h1-8,16-18,22H,9-11H2,(H,23,24)/t17-,18-/m0/s1
- Fmoc-(S)-3-amino-3-(2,3-dichlorophenyl)propionic acid● In Stock — US Item #: F338024View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3S)-3-(2,3-dichlorophenyl)-3-(9H-fluoren-9-ylmethoxycarbonylamino)propanoic acid
- SMILES
- C1=CC=C2C(=C1)C(C3=CC=CC=C32)COC(=O)NC(CC(=O)O)C4=C(C(=CC=C4)Cl)Cl
- InChIKey
- JBFKUGQWZXNAMM-NRFANRHFSA-N
- InChI
- show more
- Fmoc-(S)-3-amino-3-(2,3-dimethoxyphenyl)propionic acid● In Stock — US Item #: F338023View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3S)-3-(2,3-dimethoxyphenyl)-3-(9H-fluoren-9-ylmethoxycarbonylamino)propanoic acid
- SMILES
- COC1=CC=CC(=C1OC)C(CC(=O)O)NC(=O)OCC2C3=CC=CC=C3C4=CC=CC=C24
- InChIKey
- CNAYAYQWGPUKMH-QFIPXVFZSA-N
- InChI
- show more
- Synonyms
- Fmoc-(S)-3-amino-3-(2,3-dimethoxyphenyl)propionic acid | Fmoc-(S)-3-Amino-3-(2,3-dimethoxy-phenyl)-propionic acid | (...
- L-[3-¹³C]fucoseCAS: 478518-50-2 Formula: C513CH12O5 Molecular Weight: 165.15◐ .Made to order · 8–12 wks Item #: L354523View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3S,4R,5S,6S)-6-methyl(413C)oxane-2,3,4,5-tetrol
- SMILES
- CC1C(C(C(C(O1)O)O)O)O
- InChIKey
- SHZGCJCMOBCMKK-IZKXOTGOSA-N
- InChI
- 1S/C6H12O5/c1-2-3(7)4(8)5(9)6(10)11-2/h2-10H,1H3/t2-,3+,4+,5-,6?/m0/s1/i4+1
- Fmoc-(S)-3-amino-3-(3-bromophenyl)propionic acid● In Stock — US Item #: F338009View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3S)-3-(3-bromophenyl)-3-(9H-fluoren-9-ylmethoxycarbonylamino)propanoic acid
- SMILES
- C1=CC=C2C(=C1)C(C3=CC=CC=C32)COC(=O)NC(CC(=O)O)C4=CC(=CC=C4)Br
- InChIKey
- KGNRGFVZQISFCT-QFIPXVFZSA-N
- InChI
- show more
- Synonyms
- (3S)-3-(3-bromophenyl)-3-(9H-fluoren-9-ylmethoxycarbonylamino)propanoic Acid | fmoc-(s)-3-amino-3-(3-bromophenyl)prop...
- Fmoc-(S)-3-amino-3-(3-chlorophenyl)propionic acid● In Stock — US Item #: F338011View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3S)-3-(3-chlorophenyl)-3-(9H-fluoren-9-ylmethoxycarbonylamino)propanoic acid
- SMILES
- C1=CC=C2C(=C1)C(C3=CC=CC=C32)COC(=O)NC(CC(=O)O)C4=CC(=CC=C4)Cl
- InChIKey
- UTITXXQGMMKCQD-QFIPXVFZSA-N
- InChI
- show more
- Synonyms
- AKOS016843773 | A50467 | (S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(3-chlorophenyl)propanoic acid | Fmoc-(S...
- Fmoc-(S)-3-amino-3-(3-pyridyl)propionic acid● In Stock — US Item #: F338019View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3S)-3-(9H-fluoren-9-ylmethoxycarbonylamino)-3-pyridin-3-ylpropanoic acid
- SMILES
- C1=CC=C2C(=C1)C(C3=CC=CC=C32)COC(=O)NC(CC(=O)O)C4=CN=CC=C4
- InChIKey
- IZXATJNDHWFETN-NRFANRHFSA-N
- InChI
- show more
- Synonyms
- (3S)-3-({[(9H-Fluoren-9-yl)methoxy]carbonyl}amino)-3-(pyridin-3-yl)propanoic acid | MFCD03427986 | fmoc-(s)-3-amino-3...
- Fmoc-(S)-3-amino-3-(3-thienyl)propionic acid● In Stock — US Item #: F338018View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3S)-3-(9H-fluoren-9-ylmethoxycarbonylamino)-3-thiophen-3-ylpropanoic acid
- SMILES
- C1=CC=C2C(=C1)C(C3=CC=CC=C32)COC(=O)NC(CC(=O)O)C4=CSC=C4
- InChIKey
- FQLMDOMRTRHLFX-FQEVSTJZSA-N
- InChI
- show more
- Fmoc-(S)-3-amino-3-(3-trifluoromethylphenyl)propionic acidCAS: 507472-20-0 Formula: C25H20F3NO4 Molecular Weight: 455.43● In Stock — US Item #: F338007View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3S)-3-(9H-fluoren-9-ylmethoxycarbonylamino)-3-[3-(trifluoromethyl)phenyl]propanoic acid
- SMILES
- C1=CC=C2C(=C1)C(C3=CC=CC=C32)COC(=O)NC(CC(=O)O)C4=CC(=CC=C4)C(F)(F)F
- InChIKey
- YOGSOMNKKBEWAJ-QFIPXVFZSA-N
- InChI
- show more
- Synonyms
- Fmoc-3-Trifluoromethyl-L-b-phenylalanine | AC-25359 | A50470 | DTXSID001123138 | (3S)-3-(9H-fluoren-9-ylmethoxycarbon...
- LDN 193189 dihydrochloride● In Stock — US Item #: L287646View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-[6-(4-piperazin-1-ylphenyl)pyrazolo[1,5-a]pyrimidin-3-yl]quinoline;dihydrochloride
- SMILES
- C1CN(CCN1)C2=CC=C(C=C2)C3=CN4C(=C(C=N4)C5=CC=NC6=CC=CC=C56)N=C3.Cl.Cl
- InChIKey
- CMQXLLAILGGLRV-UHFFFAOYSA-N
- InChI
- 1S/C25H22N6.2ClH/c1-2-4-24-22(3-1)21(9-10-27-24)23-16-29-31-17-19(15-28-25(23)31)18-5-7-20(8-6-18)30-13-11-26-12-14-30;;/h1-10,15-17,26H,11-14H2;2*1H
- Synonyms
- 4-[6-[4-(1-Piperazinyl)phenyl]pyrazolo[1,5-a]pyrimidin-3-yl]quinoline dihydrochloride | DM-3189 2HCl
![L-[3-¹³C]fucose](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/L/3/L354523.png)
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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.