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
24,638Navigate 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
2,815PROTAC 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
102,614Explore 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
- Nintedanib (BIBF 1120), Inhibitor of fibroblast growth factor receptor 1;Inhibitor of fibroblast growth factor receptor 2;Inhibitor of fibroblast growth factor receptor 3;Inhibitor of fibroblast growth factor receptor 4;Inhibitor of fms related receptor tyrosine kinase 1;InhibitCAS: 656247-17-5 Formula: C31H33N5O4 Molecular Weight: 539.62Moligand™ ? 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● In Stock — US Item #: N408876View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Intedanib, Vargatef, Ofev | (Z)-methyl 3-((4-(N-methyl-2-(4-methylpiperazin-1-yl)acetamido)phenylamino)(phenyl)methyl...
- Nintedanib esylate, Fibroblast growth factor receptor inhibitor10mM in DMSO● In Stock — US Item #: N425312View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- ethanesulfonic acid;methyl 2-hydroxy-3-[N-[4-[methyl-[2-(4-methylpiperazin-1-yl)acetyl]amino]phenyl]-C-phenylcarbonimidoyl]-1H-indole-6-carboxylate
- SMILES
- CCS(=O)(=O)O.CN1CCN(CC1)CC(=O)N(C)C2=CC=C(C=C2)N=C(C3=CC=CC=C3)C4=C(NC5=C4C=CC(=C5)C(=O)OC)O
- InChIKey
- ZNMRDZZRAFJOKY-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- methyl (3Z)-3-[(4-{methyl[(4-methylpiperazin-1-yl)acetyl]amino}anilino)(phenyl)methylidene]-2-oxo-2,3-dihydro-1H-indo...
- Niraparib (MK-4827) tosylateCAS: 1038915-73-9 Formula: C26H28N4O4S Molecular Weight: 492.5910mM in DMSO● In Stock — US Item #: N408309View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Niraparib tosylate, MK 4827 tosylate, ZEJULA | 2H-Indazole-7-carboxamide, 2-[4-(3S)-3-piperidinylphenyl]-, 4-...
- Nisoldipine, Gating inhibitor of Ca v1.2;Gating inhibitor of Ca v1.3Moligand™ ? 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● In Stock — US Item #: N408419View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- BAY K 5552 | 1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic acid-3-methyl 5-(2-me...
- Nimorazole10mM in DMSO● In Stock — US Item #: N425296View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-[2-(5-nitroimidazol-1-yl)ethyl]morpholine
- SMILES
- C1COCCN1CCN2C=NC=C2[N+](=O)[O-]
- InChIKey
- MDJFHRLTPRPZLY-UHFFFAOYSA-N
- InChI
- 1S/C9H14N4O3/c14-13(15)9-7-10-8-12(9)2-1-11-3-5-16-6-4-11/h7-8H,1-6H2
- Synonyms
- Nimorazole|6506-37-2|Naxogin|Nitrimidazine|Nimorazol|Nulogyl|4-(2-(5-Nitro-1H-imidazol-1-yl)ethyl)morpholine|Esclama|...
- Nimustine Hydrochloride10mM in DMSO● In Stock — US Item #: N424737View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 3-[(4-amino-2-methylpyrimidin-5-yl)methyl]-1-(2-chloroethyl)-1-nitrosourea;hydrochloride
- SMILES
- CC1=NC=C(C(=N1)N)CNC(=O)N(CCCl)N=O.Cl
- InChIKey
- KPMKNHGAPDCYLP-UHFFFAOYSA-N
- InChI
- 1S/C9H13ClN6O2.ClH/c1-6-12-4-7(8(11)14-6)5-13-9(17)16(15-18)3-2-10;/h4H,2-3,5H2,1H3,(H,13,17)(H2,11,12,14);1H
- Synonyms
- BN164659 | Nidran (TN) | N'-((4-Amino-2-methyl-5-pyrimidinyl)methyl)-N-(2-chloroethyl)-N-nitrosourea HCl | Nidran hyd...
- Niraparib (MK-4827), Poly [ADP-ribose] polymerase-1 inhibitorMoligand™ ? 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● In Stock — US Item #: N409261View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- (S)-2-(4-(piperidin-3-yl)phenyl)-2H-indazole-7-carboxamide
- Niraparib (MK-4827) tosylateCAS: 1038915-73-9 Formula: C26H28N4O4S Molecular Weight: 492.59● In Stock — US Item #: N413794View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-methylbenzenesulfonic acid;2-[4-[(3S)-piperidin-3-yl]phenyl]indazole-7-carboxamide
- SMILES
- CC1=CC=C(C=C1)S(=O)(=O)O.C1CC(CNC1)C2=CC=C(C=C2)N3C=C4C=CC=C(C4=N3)C(=O)N
- InChIKey
- LCPFHXWLJMNKNC-PFEQFJNWSA-N
- InChI
- show more
- Synonyms
- AC-28729 | Niraparib tosylate monohyrate | 2-{4-[(3S)-piperidin-3-yl]phenyl}-2H-indazole-7-carboxamide; 4-methylbenze...
- Nitrefazole, Alcohol dehydrogenase inhibitorCAS: 21721-92-6 Formula: C10H8N4O4 Molecular Weight: 248.19◐ .Made to order · 8–12 wks Item #: N349038View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-methyl-4-nitro-1-(4-nitrophenyl)imidazole
- SMILES
- CC1=NC(=CN1C2=CC=C(C=C2)[N+](=O)[O-])[N+](=O)[O-]
- InChIKey
- NMTBSNPBIGRZBL-UHFFFAOYSA-N
- InChI
- 1S/C10H8N4O4/c1-7-11-10(14(17)18)6-12(7)8-2-4-9(5-3-8)13(15)16/h2-6H,1H3
- Synonyms
- EMD 15700 | Nitrefazolum [INN-Latin] | 5-23-05-00078 (Beilstein Handbook Reference) | nitrefazol | Nitrefazole [INN:B...
- NitenpyramCAS: 150824-47-8 Formula: C11H15ClN4O2 Molecular Weight: 270.7210mM in DMSO● In Stock — US Item #: N421782View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (E)-1-N'-[(6-chloropyridin-3-yl)methyl]-1-N'-ethyl-1-N-methyl-2-nitroethene-1,1-diamine
- SMILES
- CCN(CC1=CN=C(C=C1)Cl)C(=C[N+](=O)[O-])NC
- InChIKey
- CFRPSFYHXJZSBI-DHZHZOJOSA-N
- InChI
- 1S/C11H15ClN4O2/c1-3-15(11(13-2)8-16(17)18)7-9-4-5-10(12)14-6-9/h4-6,8,13H,3,7H2,1-2H3/b11-8+
- Synonyms
- (E)-Nitenpyram | (E)-N1'-[(6-chloro-3-pyridyl)methyl]-N1'-ethyl-N1-methyl-2-nitro-ethene-1,1-diamine;Nitenpyram | Q27...
- Nitrendipine, Gating inhibitor of Ca v1.1;Gating inhibitor of Ca v1.2;Gating inhibitor of Ca v1.3;Gating inhibitor of Ca v1.4;Channel blocker of K Ca3.1Moligand™ ? 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● In Stock — US Item #: N408436View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Bayotensin | 1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid 3-ethyl 5-methyl e...
- Nodakenin10mM in DMSO● In Stock — US Item #: N424271View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2R)-2-[2-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxypropan-2-yl]-2,3-dihydrofuro[3,2-g]chromen-7-one
- SMILES
- CC(C)(C1CC2=C(O1)C=C3C(=C2)C=CC(=O)O3)OC4C(C(C(C(O4)CO)O)O)O
- InChIKey
- HXCGUCZXPFBNRD-DNLMCPORSA-N
- InChI
- show more
- Synonyms
- MLS000563463 | (+)-Marmesinin | SMR000232306 | Q-100554 | HY-N0825 | SCHEMBL22099973 | BDBM50242388 | S2KTH28M3N | No...
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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.