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
Shop by category
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 (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
102,621Explore 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
- Calcium DL-malate hydrateSolid ≥98%● In Stock — US warehouse, ships to EU* Item #: C305183View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- calcium;2-hydroxybutanedioate
- SMILES
- C(C(C(=O)[O-])O)C(=O)[O-].[Ca+2]
- InChIKey
- OLOZVPHKXALCRI-UHFFFAOYSA-L
- InChI
- 1S/C4H6O5.Ca/c5-2(4(8)9)1-3(6)7;/h2,5H,1H2,(H,6,7)(H,8,9);/q;+2/p-2
- Synonyms
- UNII-D48OP746DW | CALCIUM MALATE [WHO-DD] | CalciumMalate21per cent | Butanedioic acid, hydroxy-, calcium salt (1:1) ...
- Calcium tin oxideCAS: 12013-46-6 Formula: CaO3Sn Molecular Weight: 206.77● In Stock — US warehouse, ships to EU* Item #: C348946View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- calcium;dioxido(oxo)tin
- SMILES
- [O-][Sn](=O)[O-].[Ca+2]
- InChIKey
- HNQGTZYKXIXXST-UHFFFAOYSA-N
- InChI
- 1S/Ca.3O.Sn/q+2;;2*-1;
- Synonyms
- EINECS 234-585-0 | Calciumstannate | Calcium stannate | EC 234-585-0 | calcium;dioxido(oxo)tin | Calcium tin trioxide...
- CalcifediolLiquid 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● In Stock — US warehouse, ships to EU* Item #: C408188View ProductPricing & Pack Sizes
Technical Identifiers
- Synonyms
- Calcidiol, Didrogyl, Hidroferol, 25-hydroxyvitamin D3, 25-Hydroxycholecalciferol | (S,Z)-3-((E)-2-((1R,3aS,7aR)-1-((R...
- Calcium Green C24, hexapotassium saltFormula: C67H74Cl2K6N4O17 Molecular Weight: 1512.82● In Stock — US warehouse, ships to EU* Item #: C276341View ProductPricing & Pack Sizes
Technical Identifiers
- Calcium Levofolinate10mM in Water● In Stock — US warehouse, ships to EU* Item #: C426083View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- calcium;(2S)-2-[[4-[[(6S)-2-amino-5-formyl-4-oxo-3,6,7,8-tetrahydropteridin-6-yl]methylamino]benzoyl]amino]pentanedioate
- SMILES
- C1C(N(C2=C(N1)N=C(NC2=O)N)C=O)CNC3=CC=C(C=C3)C(=O)NC(CCC(=O)[O-])C(=O)[O-].[Ca+2]
- InChIKey
- KVUAALJSMIVURS-QNTKWALQSA-L
- InChI
- show more
- Synonyms
- Calcium levofolinate (INN) | MFCD08704249 | L-Glutamic acid, N-(4-(((2-amino-5-formyl-1,4,5,6,7,8-hexahydro-4-oxo-6-p...
- Calycosin-7-O-beta-D-glucosideCAS: 20633-67-4 Formula: C22H22O10 Molecular Weight: 446.4010mM in DMSO● In Stock — US warehouse, ships to EU* Item #: C422506View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 3-(3-hydroxy-4-methoxyphenyl)-7-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxychromen-4-one
- SMILES
- COC1=C(C=C(C=C1)C2=COC3=C(C2=O)C=CC(=C3)OC4C(C(C(C(O4)CO)O)O)O)O
- InChIKey
- WACBUPFEGWUGPB-MIUGBVLSSA-N
- InChI
- show more
- Synonyms
- CALYCOSIN-7-O-B-D-GLUCOSIDE | 3-(3-hydroxy-4-methoxyphenyl)-7-(((2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)te...
- CamalexinSolid ≥98%● In Stock — US warehouse, ships to EU* Item #: C412537View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-(1H-indol-3-yl)-1,3-thiazole
- SMILES
- C1=CC=C2C(=C1)C(=CN2)C3=NC=CS3
- InChIKey
- IYODIJVWGPRBGQ-UHFFFAOYSA-N
- InChI
- 1S/C11H8N2S/c1-2-4-10-8(3-1)9(7-13-10)11-12-5-6-14-11/h1-7,13H
- Synonyms
- AS-16652 | Q19903715 | 1H-indole, 3-(2-thiazolyl)- | QY3Z69LA99 | 3-thiazol-2'-yl-indole | 3-(thiazol-2-yl)indole | A...
- Calcium glycinateCAS: 35947-07-0 Formula: C4H8CaN2O4 Molecular Weight: 188.2● In Stock — Germany Item #: C303536View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- calcium;2-aminoacetate
- SMILES
- C(C(=O)[O-])N.C(C(=O)[O-])N.[Ca+2]
- InChIKey
- OFNJDDJDXNMTHZ-UHFFFAOYSA-L
- InChI
- 1S/2C2H5NO2.Ca/c2*3-1-2(4)5;/h2*1,3H2,(H,4,5);/q;;+2/p-2
- Synonyms
- Calcium glycinate|35947-07-0|calcium bisglycinate|calcium;2-aminoacetate|Calcium glycinate (1:2)|Glycine, Calcium Sal...
- Calcium glycolateCAS: 26257-13-6 Formula: C4H6CaO6 Molecular Weight: 190.16● In Stock — US warehouse, ships to EU* Item #: C347797View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- calcium;2-hydroxyacetate
- SMILES
- C(C(=O)[O-])O.C(C(=O)[O-])O.[Ca+2]
- InChIKey
- CHRHZFQUDFAQEQ-UHFFFAOYSA-L
- InChI
- 1S/2C2H4O3.Ca/c2*3-1-2(4)5;/h2*3H,1H2,(H,4,5);/q;;+2/p-2
- Synonyms
- Calcium glycolate | calcium bis(2-hydroxyacetate) | NSC 220251 | DTXSID50890534 | 9W192E4Y74 | G0200 | UNII-9W192E4Y7...
- Calcium ionophore IICAS: 74267-27-9 Formula: C28H48N2O3 Molecular Weight: 460.69● In Stock — US warehouse, ships to EU* Item #: C346976View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N,N-dicyclohexyl-2-[2-(dicyclohexylamino)-2-oxoethoxy]acetamide
- SMILES
- C1CCC(CC1)N(C2CCCCC2)C(=O)COCC(=O)N(C3CCCCC3)C4CCCCC4
- InChIKey
- URAUKAJXWWFQSU-UHFFFAOYSA-N
- InChI
- 1S/C28H48N2O3/c31-27(29(23-13-5-1-6-14-23)24-15-7-2-8-16-24)21-33-22-28(32)30(25-17-9-3-10-18-25)26-19-11-4-12-20-26/h23-26H,1-22H2
- Synonyms
- SCHEMBL701404 | Eth-129 | Calcium ionophore II, Selectophore(TM), function tested | AKOS032947893 | N,N-Dicyclohexyl-...
- Calcium ionophore IVCAS: 126572-74-5 Formula: C52H100N2O3 Molecular Weight: 801.36● In Stock — US warehouse, ships to EU* Item #: C355638View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-[2-(dicyclohexylamino)-2-oxoethoxy]-N,N-dioctadecylacetamide
- SMILES
- CCCCCCCCCCCCCCCCCCN(CCCCCCCCCCCCCCCCCC)C(=O)COCC(=O)N(C1CCCCC1)C2CCCCC2
- InChIKey
- CLLKVTAGSOWKHA-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- CLLKVTAGSOWKHA-UHFFFAOYSA-N | Calcium ionophore IV | J-005399 | 2-[2-(dicyclohexylamino)-2-oxoethoxy]-N,N-dioctadecyl...
- Calcium Gluceptate◐ .Made to order · 8–12 wks Item #: C347197View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- calcium;(3R,4S,5R,6R)-2,3,4,5,6,7-hexahydroxyheptanoate
- SMILES
- C(C(C(C(C(C(C(=O)[O-])O)O)O)O)O)O.C(C(C(C(C(C(C(=O)[O-])O)O)O)O)O)O.[Ca+2]
- InChIKey
- FATUQANACHZLRT-KMRXSBRUSA-L
- InChI
- 1S/2C7H14O8.Ca/c2*8-1-2(9)3(10)4(11)5(12)6(13)7(14)15;/h2*2-6,8-13H,1H2,(H,14,15);/q;;+2/p-2/t2*2-,3-,4+,5-,6?;/m11./s1
- Synonyms
- UNII-L11651398J | Calcihept | calcium bis[(2xi)-D-glycero-D-ido-heptonate] | Calcium gluceptate (USP) | CALCIUM GLUCO...
Fast Shipping Same-day shipping on in-stock items
Technical Details Quality & specification info on every product page
Pack Size Options Multiple packaging sizes with pricing access from listing
R&D Use Only Products supplied for research and development use
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.