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
Browse by type, application, or key specifications such as purity, grade, packaging, and handling requirements.
135,385 products
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
24,175Navigate 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
2,778PROTAC 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
102,749Explore 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)
19,788Find 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)
8,822Shop 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
- TetrahydrouridineSolid ≥95%In Stock Item #: T275504View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-4-hydroxy-1,3-diazinan-2-one
- SMILES
- C1CN(C(=O)NC1O)C2C(C(C(O2)CO)O)O
- InChIKey
- UCKYOOZPSJFJIZ-XVKVHKPRSA-N
- InChI
- 1S/C9H16N2O6/c12-3-4-6(14)7(15)8(17-4)11-2-1-5(13)10-9(11)16/h4-8,12-15H,1-3H2,(H,10,16)/t4-,5?,6-,7-,8-/m1/s1
- Synonyms
- 1-[3,4-Dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-4-hydroxy-1,3-diazinan-2-one
- OBAACAS: 134531-42-3 Formula: C28H44O3 Molecular Weight: 428.65Out of Stock Item #: O335801View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 4-(4-octadecylphenyl)-4-oxobut-2-enoic acid
- SMILES
- CCCCCCCCCCCCCCCCCCC1=CC=C(C=C1)C(=O)C=CC(=O)O
- InChIKey
- ZBESASFHIWDSCJ-UHFFFAOYSA-N
- InChI
- 1S/C28H44O3/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-25-19-21-26(22-20-25)27(29)23-24-28(30)31/h19-24H,2-18H2,1H3,(H,30,31)
- Synonyms
- Bio1_000952 | HMS3266B09 | Q27164591 | KBio2_005460 | KBio2_000324 | KBioGR_000324 | 4-(4-Octadecylphenyl)-4-oxo-2-bu...
- Rhodamine 123In Stock Item #: R299309View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- methyl 2-(3-amino-6-iminoxanthen-9-yl)benzoate;hydrochloride
- SMILES
- COC(=O)C1=CC=CC=C1C2=C3C=CC(=N)C=C3OC4=C2C=CC(=C4)N.Cl
- InChIKey
- MYFATKRONKHHQL-UHFFFAOYSA-N
- InChI
- 1S/C21H16N2O3.ClH/c1-25-21(24)15-5-3-2-4-14(15)20-16-8-6-12(22)10-18(16)26-19-11-13(23)7-9-17(19)20;/h2-11,22H,23H2,1H3;1H
- Synonyms
- SCHEMBL3808879 | RH-123; R-22420 | RH-123 | rhodamine 110 methyl ester | Rhodamine 123, BioReagent, for fluorescence,...
- (R)-(-)-IbuprofenCAS: 51146-57-7 Formula: C13H18O2 Molecular Weight: 206.28In Stock Item #: L126048View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2R)-2-[4-(2-methylpropyl)phenyl]propanoic acid
- SMILES
- CC(C)CC1=CC=C(C=C1)C(C)C(=O)O
- InChIKey
- HEFNNWSXXWATRW-SNVBAGLBSA-N
- InChI
- 1S/C13H18O2/c1-9(2)8-11-4-6-12(7-5-11)10(3)13(14)15/h4-7,9-10H,8H2,1-3H3,(H,14,15)/t10-/m1/s1
- Synonyms
- AC-32024 | (2R)-2-(4-isobutylphenyl)propanoic acid | HY-78131B | (R)-(-)-Ibuprofen | alphaR-Sethyl-4-(2-methylpropyl)...
- 1-Vinyl-3-Ethylimidazolium HexafluorophosphateSolid ≥97%In Stock Item #: V302115View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-ethenyl-3-ethylimidazol-3-ium;hexafluorophosphate
- SMILES
- CC[N+]1=CN(C=C1)C=C.F[P-](F)(F)(F)(F)F
- InChIKey
- OJXFPXRCWMKTHY-UHFFFAOYSA-N
- InChI
- 1S/C7H11N2.F6P/c1-3-8-5-6-9(4-2)7-8;1-7(2,3,4,5)6/h3,5-7H,1,4H2,2H3;/q+1;-1
- Synonyms
- hexafluorophosphate | 1-Ethenyl-3-ethylimidazol-3-ium
- GW 590735, Peroxisome proliferator-activated receptor alpha agonistCAS: 622402-22-6 Formula: C23H21F3N2O4S Molecular Weight: 478.48In Stock Item #: G275270View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-methyl-2-[4-[[[4-methyl-2-[4-(trifluoromethyl)phenyl]-1,3-thiazole-5-carbonyl]amino]methyl]phenoxy]propanoic acid
- SMILES
- CC1=C(SC(=N1)C2=CC=C(C=C2)C(F)(F)F)C(=O)NCC3=CC=C(C=C3)OC(C)(C)C(=O)O
- InChIKey
- ILUPZUOBHCUBKB-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- HMS3650D07 | DB07215 | QKY617BBX5 | EX-A5892 | ILUPZUOBHCUBKB-UHFFFAOYSA-N | 2-methyl-2-{4-[({4-methyl-2-[4-(trifluor...
- Sertaconazole nitrate, Cytochrome P450 51 inhibitorIn Stock Item #: S129395View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 1-[2-[(7-chloro-1-benzothiophen-3-yl)methoxy]-2-(2,4-dichlorophenyl)ethyl]imidazole;nitric acid
- SMILES
- C1=CC2=C(C(=C1)Cl)SC=C2COC(CN3C=CN=C3)C4=C(C=C(C=C4)Cl)Cl.[N+](=O)(O)[O-]
- InChIKey
- HAAITRDZHUANGT-UHFFFAOYSA-N
- InChI
- 1S/C20H15Cl3N2OS.HNO3/c21-14-4-5-16(18(23)8-14)19(9-25-7-6-24-12-25)26-10-13-11-27-20-15(13)2-1-3-17(20)22;2-1(3)4/h1-8,11-12,19H,9-10H2;(H,2,3,4)
- Synonyms
- HMS1571A12 | CAS-99592-39-9 | A851341 | 1-{2-[(7-chloro-1-benzothiophen-3-yl)methoxy]-2-(2,4-dichlorophenyl)ethyl}-1H...
- Fmoc-12-amino-4,7,10-trioxadodecanoic acidCAS: 867062-95-1 Formula: C24H29NO7 Molecular Weight: 443.5In Stock Item #: F122098View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 3-[2-[2-[2-(9H-fluoren-9-ylmethoxycarbonylamino)ethoxy]ethoxy]ethoxy]propanoic acid
- SMILES
- C1=CC=C2C(=C1)C(C3=CC=CC=C32)COC(=O)NCCOCCOCCOCCC(=O)O
- InChIKey
- CHIDDYZONKDHLG-UHFFFAOYSA-N
- InChI
- 1S/C24H29NO7/c26-23(27)9-11-29-13-15-31-16-14-30-12-10-25-24(28)32-17-22-20-7-3-1-5-18(20)19-6-2-4-8-21(19)22/h1-8,22H,9-17H2,(H,25,28)(H,26,27)
- Synonyms
- Fmoc-NH-PEG3-CH2CH2COOH | N-Fmoc-12-amino-4,7,10-trioxadodecanoicacid | 1-(9H-Fluoren-9-yl)-3-oxo-2,7,10,13-tetraoxa-...
- Fmoc-15-amino-4,7,10,13-tetraoxapentadecacanoic acidCAS: 557756-85-1 Formula: C26H33NO8 Molecular Weight: 487.55In Stock Item #: F122099View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 3-[2-[2-[2-[2-(9H-fluoren-9-ylmethoxycarbonylamino)ethoxy]ethoxy]ethoxy]ethoxy]propanoic acid
- SMILES
- C1=CC=C2C(=C1)C(C3=CC=CC=C32)COC(=O)NCCOCCOCCOCCOCCC(=O)O
- InChIKey
- NUHRPLKTAAVHCZ-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- Fmoc-15-amino-4,7,10,13-tetraoxapentadecacanoic acid | Fmoc-NH-PEG4-CH2CH2COOH
- GSK 9027CAS: 1229096-88-1 Formula: C27H19F4N3O2S Molecular Weight: 525.52In Stock Item #: G288349View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-[4-[1-(4-fluorophenyl)indazol-5-yl]-3-(trifluoromethyl)phenyl]-1-phenylmethanesulfonamide
- SMILES
- C1=CC=C(C=C1)CS(=O)(=O)NC2=CC(=C(C=C2)C3=CC4=C(C=C3)N(N=C4)C5=CC=C(C=C5)F)C(F)(F)F
- InChIKey
- DXBJGDVBQPEMOB-UHFFFAOYSA-N
- InChI
- 1S/C27H19F4N3O2S/c28-21-7-10-23(11-8-21)34-26-13-6-19(14-20(26)16-32-34)24-12-9-22(15-25(24)27(29,30)31)33-37(35,36)17-18-4-2-1-3-5-18/h1-16,33H,17H2
- Synonyms
- N-[4-[1-(4-Fluorophenyl)-1H-indazol-5-yl-3-(trifluoromethyl)phenyl]benzenesulfonamide
- GW 1929 hydrochlorideOut of Stock Item #: G286659View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (2S)-2-(2-benzoylanilino)-3-[4-[2-[methyl(pyridin-2-yl)amino]ethoxy]phenyl]propanoic acid;hydrochloride
- SMILES
- CN(CCOC1=CC=C(C=C1)CC(C(=O)O)NC2=CC=CC=C2C(=O)C3=CC=CC=C3)C4=CC=CC=N4.Cl
- InChIKey
- KXNKIKXTGRMLEY-YCBFMBTMSA-N
- InChI
- show more
- Synonyms
- N-(2-Benzoylphenyl)-O-[2-(methyl-2-pyridinylamino)ethyl]-L-tyrosine hydrochloride
- NBI 35965 hydrochlorideOut of Stock Item #: N288172View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- (10S)-9-(cyclopropylmethyl)-3-(2,4-dichlorophenyl)-10-ethyl-6-methyl-1,2,5,9-tetrazatricyclo[6.3.1.04,12]dodeca-2,4,6,8(12)-tetraene;hydrochloride
- SMILES
- CCC1CN2C3=C(N1CC4CC4)C=C(N=C3C(=N2)C5=C(C=C(C=C5)Cl)Cl)C.Cl
- InChIKey
- LNYUWBPFYXPUIO-RSAXXLAASA-N
- InChI
- show more
- Synonyms
- 1782228-59-4 | DTXSID10849508 | (10S)-9-(cyclopropylmethyl)-3-(2,4-dichlorophenyl)-10-ethyl-6-methyl-1,2,5,9-tetrazat...
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