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
- (S)-2,4-Diaminobutanoic acidCAS: 1758-80-1 Formula: C4H10N2O2 Molecular Weight: 118.1310mM in Water◐ .Made to order · 8–12 wks Item #: L580598View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2S)-2,4-diaminobutanoic acid
- SMILES
- C(CN)C(C(=O)O)N
- InChIKey
- OGNSCSPNOLGXSM-VKHMYHEASA-N
- InChI
- 1S/C4H10N2O2/c5-2-1-3(6)4(7)8/h3H,1-2,5-6H2,(H,7,8)/t3-/m0/s1
- Synonyms
- 2,4-DIAMINOBUTYRIC ACID, L- | Diaminobutyric acid, L- | EN300-119052 | NCGC00096593-01 | C03283 | L-2,4-diaminobutyra...
- L-Glutamic acid γ-(p-nitroanilide) hydrochloride10mM in DMSO◐ .Made to order · 8–12 wks Item #: L580430View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2S)-2-amino-5-(4-nitroanilino)-5-oxopentanoic acid;hydrochloride
- SMILES
- C1=CC(=CC=C1NC(=O)CCC(C(=O)O)N)[N+](=O)[O-].Cl
- InChIKey
- OJEVFSFTVARWQX-FVGYRXGTSA-N
- InChI
- 1S/C11H13N3O5.ClH/c12-9(11(16)17)5-6-10(15)13-7-1-3-8(4-2-7)14(18)19;/h1-4,9H,5-6,12H2,(H,13,15)(H,16,17);1H/t9-;/m0./s1
- Synonyms
- (2S)-2-amino-5-(4-nitroanilino)-5-oxopentanoic acid;hydrochloride | N5-(4-Nitrophenyl)-L-glutamine hydrochloride | L-...
- LC3-mHTT-IN-AN1CAS: 486443-73-6 Formula: C15H9Br2NO3 Molecular Weight: 411.04Liquid 10mM in DMSO◐ .Made to order · 8–12 wks Item #: L580431View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (3Z)-5-bromo-3-[(3-bromo-4,5-dihydroxyphenyl)methylidene]-1H-indol-2-one
- SMILES
- C1=CC2=C(C=C1Br)C(=CC3=CC(=C(C(=C3)Br)O)O)C(=O)N2
- InChIKey
- GPKLWRHHVIBYEO-KMKOMSMNSA-N
- InChI
- 1S/C15H9Br2NO3/c16-8-1-2-12-9(6-8)10(15(21)18-12)3-7-4-11(17)14(20)13(19)5-7/h1-6,19-20H,(H,18,21)/b10-3-
- Synonyms
- AN1；5-Bromo-3-[(3-bromo-4,5-dihydroxyphenyl)methylene]-1,3-dihydro-2H-indol-2-one；mHTT-LC3 linker AN1；(Z)-5-bromo-3-(...
- LQZ-7ICAS: 195822-23-2 Formula: C20H14F2N4 Molecular Weight: 348.35Liquid 10mM in DMSO◐ .Made to order · 8–12 wks Item #: L580434View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-N,3-N-bis(4-fluorophenyl)quinoxaline-2,3-diamine
- SMILES
- C1=CC=C2C(=C1)N=C(C(=N2)NC3=CC=C(C=C3)F)NC4=CC=C(C=C4)F
- InChIKey
- DKPCKOKYSVPFEB-UHFFFAOYSA-N
- InChI
- 1S/C20H14F2N4/c21-13-5-9-15(10-6-13)23-19-20(24-16-11-7-14(22)8-12-16)26-18-4-2-1-3-17(18)25-19/h1-12H,(H,23,25)(H,24,26)
- Levodropropizine10mM in DMSO◐ .Made to order · 8–12 wks Item #: L580435View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2S)-3-(4-phenylpiperazin-1-yl)propane-1,2-diol
- SMILES
- C1CN(CCN1CC(CO)O)C2=CC=CC=C2
- InChIKey
- PTVWPYVOOKLBCG-ZDUSSCGKSA-N
- InChI
- 1S/C13H20N2O2/c16-11-13(17)10-14-6-8-15(9-7-14)12-4-2-1-3-5-12/h1-5,13,16-17H,6-11H2/t13-/m0/s1
- Synonyms
- (-)-(S)-3-(4-Phenyl-1-piperazinyl)-1,2-propanediol | MFCD00866852 | DB12472 | Levodropropizine | Rapitux | (2S)-3-(4-...
- β-LapachoneCAS: 4707-32-8 Formula: C15H14O3 Molecular Weight: 242.2710mM in DMSO◐ .Made to order · 8–12 wks Item #: L580571View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2,2-dimethyl-3,4-dihydrobenzo[h]chromene-5,6-dione
- SMILES
- CC1(CCC2=C(O1)C3=CC=CC=C3C(=O)C2=O)C
- InChIKey
- QZPQTZZNNJUOLS-UHFFFAOYSA-N
- InChI
- 1S/C15H14O3/c1-15(2)8-7-11-13(17)12(16)9-5-3-4-6-10(9)14(11)18-15/h3-6H,7-8H2,1-2H3
- Synonyms
- MB-12066 | Tox21_500717 | 2,2-Dimethyl-3,4-dihydro-2H-benzo[h]chromene-5,6-dione # | Beta lapachone | Beta -Lapachone...
- L-Glutamic acid monosodium salt10mM in Water◐ .Made to order · 8–12 wks Item #: L580585View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- sodium;(2S)-2-amino-5-hydroxy-5-oxopentanoate
- SMILES
- C(CC(=O)O)C(C(=O)[O-])N.[Na+]
- InChIKey
- LPUQAYUQRXPFSQ-DFWYDOINSA-M
- InChI
- 1S/C5H9NO4.Na/c6-3(5(9)10)1-2-4(7)8;/h3H,1-2,6H2,(H,7,8)(H,9,10);/q;+1/p-1/t3-;/m0./s1
- Synonyms
- GTPL2932 | l-Monosodium glutamate | Natriumglutaminat [German] | FT-0624375 | L-Glutamic acid, sodium salt (1:1) | So...
- MorantelTartrate● In Stock — US warehouse, ships to EU* Item #: M135812View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2,3-dihydroxybutanedioic acid;1-methyl-2-[(E)-2-(3-methylthiophen-2-yl)ethenyl]-5,6-dihydro-4H-pyrimidine
- SMILES
- CC1=C(SC=C1)C=CC2=NCCCN2C.C(C(C(=O)O)O)(C(=O)O)O
- InChIKey
- GGXQONWGCAQGNA-FXRZFVDSSA-N
- InChI
- 1S/C12H16N2S.C4H6O6/c1-10-6-9-15-11(10)4-5-12-13-7-3-8-14(12)2;5-1(3(7)8)2(6)4(9)10/h4-6,9H,3,7-8H2,1-2H3;1-2,5-6H,(H,7,8)(H,9,10)/b5-4+;
- Synonyms
- SCHEMBL117920 | (E)-1-methyl-2-(2-(3-methylthiophen-2-yl)vinyl)-1,4,5,6-tetrahydropyrimidine 2,3-dihydroxysuccinate |...
- IHAP1Liquid 10mM in DMSO◐ .Made to order · 8–12 wks Item #: I580566View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2-chlorophenothiazin-10-yl)-(4-methoxyphenyl)methanone
- SMILES
- COC1=CC=C(C=C1)C(=O)N2C3=CC=CC=C3SC4=C2C=C(C=C4)Cl
- InChIKey
- CSWHYHPUEDNIQY-UHFFFAOYSA-N
- InChI
- 1S/C20H14ClNO2S/c1-24-15-9-6-13(7-10-15)20(23)22-16-4-2-3-5-18(16)25-19-11-8-14(21)12-17(19)22/h2-12H,1H3
- Synonyms
- CUN25391 | BDBM50483987 | EX-A4126 | SCHEMBL22147462 | Z56843374 | (2-chlorophenothiazin-10-yl)-(4-methoxyphenyl)meth...
- JNJ-67856633, Inhibitor of Janus kinase 2;Inhibitor of MALT1 paracaspaseLiquid Moligand™ ? 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◐ .Made to order · 8–12 wks Item #: J580427View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-(1-oxo-2H-isoquinolin-5-yl)-5-(trifluoromethyl)-N-[2-(trifluoromethyl)pyridin-4-yl]pyrazole-4-carboxamide
- SMILES
- C1=CC2=C(C=CNC2=O)C(=C1)N3C(=C(C=N3)C(=O)NC4=CC(=NC=C4)C(F)(F)F)C(F)(F)F
- InChIKey
- APWRZPQBPCAXFP-UHFFFAOYSA-N
- InChI
- 1S/C20H11F6N5O2/c21-19(22,23)15-8-10(4-6-27-15)30-18(33)13-9-29-31(16(13)20(24,25)26)14-3-1-2-12-11(14)5-7-28-17(12)32/h1-9H,(H,28,32)(H,27,30,33)
- Synonyms
- APWRZPQBPCAXFP-UHFFFAOYSA-N | SAFIMALTIB [INN] | safimaltib | SCHEMBL23417687 | 1-(1-Oxo-1,2-dihydro-5-isoquinolyl)-5...
- INH154CAS: 1587705-63-2 Formula: C22H24N4OS Molecular Weight: 392.52Liquid 10mM in DMSO◐ .Made to order · 8–12 wks Item #: I580417View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-[4-(2,6-dimethyl-4-piperidin-1-ylphenyl)-1,3-thiazol-2-yl]pyridine-4-carboxamide
- SMILES
- CC1=CC(=CC(=C1C2=CSC(=N2)NC(=O)C3=CC=NC=C3)C)N4CCCCC4
- InChIKey
- BBVORAZSFSZSKG-UHFFFAOYSA-N
- InChI
- 1S/C22H24N4OS/c1-15-12-18(26-10-4-3-5-11-26)13-16(2)20(15)19-14-28-22(24-19)25-21(27)17-6-8-23-9-7-17/h6-9,12-14H,3-5,10-11H2,1-2H3,(H,24,25,27)
- Isosulfan BlueLiquid 10mM in DMSO◐ .Made to order · 8–12 wks Item #: I580424View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- sodium;2-[[4-(diethylamino)phenyl]-(4-diethylazaniumylidenecyclohexa-2,5-dien-1-ylidene)methyl]benzene-1,4-disulfonate
- SMILES
- CCN(CC)C1=CC=C(C=C1)C(=C2C=CC(=[N+](CC)CC)C=C2)C3=C(C=CC(=C3)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+]
- InChIKey
- NLUFDZBOHMOBOE-UHFFFAOYSA-M
- InChI
- show more
- Synonyms
- Sulphan blue 2,5-disulfophenyl isomer | Sodium 2-((4-(diethylamino)phenyl)(4-(diethyliminio)cyclohexa-2,5-dien-1-ylid...
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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.