Navigate 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.
Ligand families
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- N₃-PEG₄-CH₂CH₂COOtBuCAS: 581066-04-8 Formula: C15H29N3O6 Molecular Weight: 347.41Liquid ≥97%● In Stock — US warehouse, ships to EU* Item #: N122165View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- tert-butyl 3-[2-[2-[2-(2-azidoethoxy)ethoxy]ethoxy]ethoxy]propanoate
- SMILES
- CC(C)(C)OC(=O)CCOCCOCCOCCOCCN=[N+]=[N-]
- InChIKey
- KUOGRGKKXWMJFM-UHFFFAOYSA-N
- InChI
- 1S/C15H29N3O6/c1-15(2,3)24-14(19)4-6-20-8-10-22-12-13-23-11-9-21-7-5-17-18-16/h4-13H2,1-3H3
- Synonyms
- N3-PEG4- CH2CH2COOtBu | E79908 | DTXSID601190858 | HY-140777 | AKOS040741248 | 1,1-Dimethylethyl 15-azido-4,7,10,13-t...
- Fmoc-NH-(PEG)₉-CH₂CH₂COOHCAS: 1191064-81-9 Formula: C36H53NO13 Molecular Weight: 707.8◐ .Made to order · 8–12 wks Item #: F122103View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 3-[2-[2-[2-[2-[2-[2-[2-[2-[2-(9H-fluoren-9-ylmethoxycarbonylamino)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]propanoic acid
- SMILES
- C1=CC=C2C(=C1)C(C3=CC=CC=C32)COC(=O)NCCOCCOCCOCCOCCOCCOCCOCCOCCOCCC(=O)O
- InChIKey
- NEESTRVILHNOJT-UHFFFAOYSA-N
- InChI
- show more
- Isocyanate PEG Isocyanate, ISC-PEG-ISCMW 2000 Da● In Stock — US warehouse, ships to EU* Item #: I163812View ProductPricing & Pack Sizes
Technical Identifiers
- Isocyanate PEG Isocyanate, ISC-PEG-ISCMW 10000 Da● In Stock — US warehouse, ships to EU* Item #: I163811View ProductPricing & Pack Sizes
Technical Identifiers
- Isothiocyanate PEG, mPEG-ITCMW 30000 Da● In Stock — US warehouse, ships to EU* Item #: I163827View ProductPricing & Pack Sizes
Technical Identifiers
- Thalidomide-O-PEG2-propargyl● In Stock — US warehouse, ships to EU* Item #: T286891View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- 2-(2,6-dioxopiperidin-3-yl)-4-[2-(2-prop-2-ynoxyethoxy)ethoxy]isoindole-1,3-dione
- SMILES
- C#CCOCCOCCOC1=CC=CC2=C1C(=O)N(C2=O)C3CCC(=O)NC3=O
- InChIKey
- XJWGDRINRIEEJD-UHFFFAOYSA-N
- InChI
- 1S/C20H20N2O7/c1-2-8-27-9-10-28-11-12-29-15-5-3-4-13-17(15)20(26)22(19(13)25)14-6-7-16(23)21-18(14)24/h1,3-5,14H,6-12H2,(H,21,23,24)
- Synonyms
- Thalidomide-linker5 | Thalidomide-O-PEG2-propargyl | E3 ligase Ligand-Linker Conjugates 32 | 2-(2,6-Dioxo-3-piperidin...
- Thalidomide-O-amido-PEG3-NH2 hydrochloride● In Stock — US warehouse, ships to EU* Item #: T287614View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-[2-[2-[2-(2-aminoethoxy)ethoxy]ethoxy]ethyl]-2-[2-(2,6-dioxopiperidin-3-yl)-1,3-dioxoisoindol-4-yl]oxyacetamide;hydrochloride
- SMILES
- C1CC(=O)NC(=O)C1N2C(=O)C3=C(C2=O)C(=CC=C3)OCC(=O)NCCOCCOCCOCCN.Cl
- InChIKey
- ORRMBTUTYKQYQU-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- Thalidomide - linker 1 | N-[2-[2-[2-(2-Aminoethoxy)ethoxy]ethoxy]ethyl]-2-[[2-(2,6-dioxo-3-piperidinyl)-2,3-dihydro-1...
- Thalidomide 4'-oxyacetamide-alkylC1-PEG3-alkylC3-amine hydrochloride● In Stock — US warehouse, ships to EU* Item #: T287206View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-[3-[2-[2-(3-aminopropoxy)ethoxy]ethoxy]propyl]-2-[2-(2,6-dioxopiperidin-3-yl)-1,3-dioxoisoindol-4-yl]oxyacetamide;hydrochloride
- SMILES
- C1CC(=O)NC(=O)C1N2C(=O)C3=C(C2=O)C(=CC=C3)OCC(=O)NCCCOCCOCCOCCCN.Cl
- InChIKey
- BDDPTKKUZMIBGC-UHFFFAOYSA-N
- InChI
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- Synonyms
- N-[3-[2-[2-(3-Aminopropoxy)ethoxy]ethoxy]propyl]-2-[[2-(2,6-dioxo-3-piperidinyl)-2,3-dihydro-1,3-dioxo-1H-isoindol-4-...
- Thiol PEG NHS, HS-PEG-NHSMW 10000 Da● In Stock — US warehouse, ships to EU* Item #: T164371View ProductPricing & Pack Sizes
Technical Identifiers
- Thiol PEG Acid, HS-PEG-COOHSolid MW 600 Da◐ .Made to order · 8–12 wks Item #: T164362View ProductPricing & Pack Sizes
Technical Identifiers
- Thalidomide-O-amido-PEG2-C2-NH2 hydrochlorideCAS: 2376990-30-4 EC Number: 961-883-4 PubChem CID: 145874885 Formula: C21H26N4O8.HCl Molecular Weight: 498.92● In Stock — US warehouse, ships to EU* Item #: T288484View ProductPricing & Pack Sizes
Technical Identifiers
- IUPAC Name
- N-[2-[2-(2-aminoethoxy)ethoxy]ethyl]-2-[2-(2,6-dioxopiperidin-3-yl)-1,3-dioxoisoindol-4-yl]oxyacetamide;hydrochloride
- SMILES
- C1CC(=O)NC(=O)C1N2C(=O)C3=C(C2=O)C(=CC=C3)OCC(=O)NCCOCCOCCN.Cl
- InChIKey
- CPJQBYYTYFGXKD-UHFFFAOYSA-N
- InChI
- show more
- Synonyms
- Thalidomide - linker 14 | N-[2-[2-(2-Aminoethoxy)ethoxy]ethyl]-2-[[2-(2,6-dioxo-3-piperidinyl)-2,3-dihydro-1,3-dioxo-...
- Isocyanate PEG, mPEG-ISCMW 10000 Da● In Stock — US warehouse, ships to EU* Item #: I163816View ProductPricing & Pack Sizes
Technical Identifiers
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Frequently Asked Questions
What should I consider when selecting Ligand families?
When selecting Ligand families, consider the metal precursor, substrate class, and whether the reaction is sensitive to air or moisture. Ligand-to-metal ratio and preformed versus in-situ complex formation often matter as much as the ligand identity.
What does Ligand families cover?
Ligand families is a top-level listing in our catalogue. Use the filters and search on the listing page to narrow by the attributes that matter for your work, or browse the neighbouring categories from the main navigation.
Which data should I check before ordering Ligand families?
Check assay purity for the Ligand families lot, chiral purity where applicable, and appearance, and confirm storage temperature and atmosphere. Oxidised ligand is a common and easily missed cause of failed catalysis. All products are supplied for professional research and development use only, and are not for use in humans, animals, diagnostics, or therapy.
Can I search Ligand families by structure or chirality?
Yes — filter Ligand families by ligand class and chirality, and search by CAS number or SMILES. For preformed metal complexes, bulk quantities, or ligands not listed, contact [email protected].







