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).
By Target / Pathway / Disease
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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
24,643Navigate 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
2,814PROTAC 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
102,640Explore 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)
19,704Find 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 (where available)—to build screening and validation sets.
By Disease (DOID)
8,783Shop 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.
Popular Products
- MAC13243CAS: 1071638-38-4 Formula: C20H25Cl2N3O2S Molecular Weight: 442.40Solid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥98%● In Stock — US Item #: M126408View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 6-[(4-chlorophenyl)methylsulfanyl]-3-[2-(3,4-dimethoxyphenyl)ethyl]-2,4-dihydro-1H-1,3,5-triazine;hydrochloride
- SMILES
- COC1=C(C=C(C=C1)CCN2CNC(=NC2)SCC3=CC=C(C=C3)Cl)OC.Cl
- InChIKey
- VCJIDISBDZWDOJ-UHFFFAOYSA-N
- InChI
- 1S/C20H24ClN3O2S.ClH/c1-25-18-8-5-15(11-19(18)26-2)9-10-24-13-22-20(23-14-24)27-12-16-3-6-17(21)7-4-16;/h3-8,11H,9-10,12-14H2,1-2H3,(H,22,23);1H
- Synonyms
- F84905 | AKOS030526236 | HY-14456A | 1071638-38-4 | CID 2806781 | MAC13243 | DTXSID20384516 | 6-[(4-chlorophenyl)meth...
- Magnesium sulfidePrimorTrace™ ? PrimorTrace™ — Aladdin's trace-metal-analysis line with ultra-low metal background. Use for ICP/AAS trace-metal work where contamination must be minimal. ≥99.99% metals basis● In Stock — US Item #: M302595View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- sulfanylidenemagnesium
- SMILES
- [Mg]=S
- InChIKey
- SMDQFHZIWNYSMR-UHFFFAOYSA-N
- InChI
- 1S/Mg.S
- Synonyms
- DTXSID2065179 | sulfanylidenemagnesium | EINECS 234-771-1 | UNII-TWD834A2KD | Magnesium sulphide | Magnesium Boride (...
- Danofloxacin mesylateCAS: 119478-55-6 EC Number: 638-813-3 PubChem CID: 71334 Formula: C20H24FN3O6S Molecular Weight: 453.48Solid ≥98%● In Stock — US Item #: D141098View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-cyclopropyl-6-fluoro-7-[(1S,4S)-5-methyl-2,5-diazabicyclo[2.2.1]heptan-2-yl]-4-oxoquinoline-3-carboxylic acid;methanesulfonic acid
- SMILES
- CN1CC2CC1CN2C3=C(C=C4C(=C3)N(C=C(C4=O)C(=O)O)C5CC5)F.CS(=O)(=O)O
- InChIKey
- APFDJSVKQNSTKF-FXMYHANSSA-N
- InChI
- show more
- Synonyms
- AS-75249 | cp 76136-27 | Danofloxacin mesilate hydrate | DTXSID30922988 | R1308VH37P | UNII-94F3SX3LEM | Danofloxacin...
- Sodium Tanshinone IIACAS: 69659-80-9 Formula: C19H17O6S · Na Molecular Weight: 396.39Analytical standard ? Analytical standard — certified-purity material for quantitative calibration. Use to prepare calibration standards and validate analytical methods. Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. ≥98%● In Stock — US Item #: S107694View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- sodium;1,6,6-trimethyl-10,11-dioxo-8,9-dihydro-7H-naphtho[1,2-g][1]benzofuran-2-sulfonate
- SMILES
- CC1=C(OC2=C1C(=O)C(=O)C3=C2C=CC4=C3CCCC4(C)C)S(=O)(=O)[O-].[Na+]
- InChIKey
- AZEZEAABTDXEHR-UHFFFAOYSA-M
- InChI
- 1S/C19H18O6S.Na/c1-9-13-15(20)16(21)14-10-5-4-8-19(2,3)12(10)7-6-11(14)17(13)25-18(9)26(22,23)24;/h6-7H,4-5,8H2,1-3H3,(H,22,23,24);/q;+1/p-1
- Synonyms
- Danshen-201 | Sodium tanshinone II A sulfonate | TanshinoneIIA | SULFOTANSHINONE SODIUM II-A | DTXSID00219953 | TANSH...
- Methyl 2-hydroxy-6-methylbenzoate● In Stock — US Item #: M303466View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- methyl 2-hydroxy-6-methylbenzoate
- SMILES
- CC1=C(C(=CC=C1)O)C(=O)OC
- InChIKey
- GPNCYIZKJTXKRO-UHFFFAOYSA-N
- InChI
- 1S/C9H10O3/c1-6-4-3-5-7(10)8(6)9(11)12-2/h3-5,10H,1-2H3
- Synonyms
- Benzoic acid, 2-hydroxy-6-methyl-, methyl ester | C74722 | DS-15238 | UNII-7I0LI71IJ1 | Methyl 2-hydroxy-6-methylbenz...
- Prostaglandin A1● In Stock — US Item #: P276150View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 7-[(1R,2S)-2-[(E,3S)-3-hydroxyoct-1-enyl]-5-oxocyclopent-3-en-1-yl]heptanoic acid
- SMILES
- CCCCCC(C=CC1C=CC(=O)C1CCCCCCC(=O)O)O
- InChIKey
- BGKHCLZFGPIKKU-LDDQNKHRSA-N
- InChI
- 1S/C20H32O4/c1-2-3-6-9-17(21)14-12-16-13-15-19(22)18(16)10-7-4-5-8-11-20(23)24/h12-18,21H,2-11H2,1H3,(H,23,24)/b14-12+/t16-,17-,18+/m0/s1
- Synonyms
- 15-hydroxy-9-oxoprosta-10,13-dienoate | ALPROSTADIL IMPURITY A [EP IMPURITY] | 15a-Hydroxy-9-oxo-10,13E-prostadienoic...
- DL-[1-2H]glyceraldehydeCAS: 72599-69-0 Formula: C3H5DO3 Molecular Weight: 91.08◐ .Made to order · 8–12 wks Item #: D351604View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-deuterio-2,3-dihydroxypropan-1-one
- SMILES
- C(C(C=O)O)O
- InChIKey
- MNQZXJOMYWMBOU-MICDWDOJSA-N
- InChI
- 1S/C3H6O3/c4-1-3(6)2-5/h1,3,5-6H,2H2/i1D
- PolicresulenLiquid 50% aqueous solution● In Stock — US Item #: P302076View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-hydroxy-3,5-bis[(4-hydroxy-2-methyl-5-sulfophenyl)methyl]-4-methylbenzenesulfonic acid
- SMILES
- CC1=CC(=C(C=C1CC2=CC(=C(C(=C2C)CC3=CC(=C(C=C3C)O)S(=O)(=O)O)O)S(=O)(=O)O)S(=O)(=O)O)O
- InChIKey
- ACZKMKGNTMOPBD-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- 5,5'-(4-hydroxy-2-methyl-5-sulfo-1,3-phenylene)bis(methylene)bis(2-hydroxy-4-methylbenzenesulfonic acid) | BCP22334 |...
- PoloxinSolid ≥99%◐ .Made to order · 8–12 wks Item #: P126719View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- [(Z)-(2-methyl-4-oxo-5-propan-2-ylcyclohexa-2,5-dien-1-ylidene)amino] 2-methylbenzoate
- SMILES
- CC1=CC=CC=C1C(=O)ON=C2C=C(C(=O)C=C2C)C(C)C
- InChIKey
- CMOJHDQJJPIVEC-MNDPQUGUSA-N
- InChI
- 1S/C18H19NO3/c1-11(2)15-10-16(13(4)9-17(15)20)19-22-18(21)14-8-6-5-7-12(14)3/h5-11H,1-4H3/b19-16-
- Synonyms
- 2-Methyl-5-(1-methylethyl)-2,5-cyclohexadiene-1,4-dione 1-[O-(2-methylbenzoyl)oxime] | DTXSID30430634 | 2-Isopropyl-5...
- Prostaglandin A3◐ .Made to order · 8–12 wks Item #: P355727View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (Z)-7-[(1R,2S)-2-[(1E,3S,5Z)-3-hydroxyocta-1,5-dienyl]-5-oxocyclopent-3-en-1-yl]hept-5-enoic acid
- SMILES
- CCC=CCC(C=CC1C=CC(=O)C1CC=CCCCC(=O)O)O
- InChIKey
- KSIRMUMXJFWKAC-FHJHOUOTSA-N
- InChI
- show more
- Synonyms
- 9-oxo-15S-hydroxy-prosta-5Z,10,13E,17Z-tetraen-1-oic acid | PGA3
- Sodium taurocholateSolid ≥95%● In Stock — US Item #: S100834View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- show more
- SMILES
- CC(CCC(=O)NCCS(=O)(=O)[O-])C1CCC2C1(C(CC3C2C(CC4C3(CCC(C4)O)C)O)O)C.[Na+]
- InChIKey
- JAJWGJBVLPIOOH-IZYKLYLVSA-M
- InChI
- show more
- Synonyms
- Monosodium N-choloyltaurinate | UNII-M6N3TH81NO | Taurocholic acid sodium salt | Taurocholate sodium | EINECS 205-653...
- Potassium methacrylate● In Stock — US Item #: P304402View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- potassium;2-methylprop-2-enoate
- SMILES
- CC(=C)C(=O)[O-].[K+]
- InChIKey
- LLLCSBYSPJHDJX-UHFFFAOYSA-M
- InChI
- 1S/C4H6O2.K/c1-3(2)4(5)6;/h1H2,2H3,(H,5,6);/q;+1/p-1
- Synonyms
- Potassium methacrylate|6900-35-2|2-Propenoic acid, 2-methyl-, potassium salt|potassium;2-methylprop-2-enoate|potassiu...
![DL-[1-2H]glyceraldehyde](https://www.aladdinsci.com/media/catalog/product/cache/6360e336b2a70951114dbd37294096ee/D/3/D351604.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.