PEG

t-Boc-N-Amido-PEG5-Tos is a PEG linker containing a tosyl group and Boc-protected amine group. The hydrophilic PEG spacer increases the water solubility of a compound in aqueous media. The tosyl group is a very good leaving group for nucleophilic substitution reactions. The Boc group can be deprotected under mild acidic conditions to form a free amine. Reagent grade, for research use only.

CbzNH-PEG3-CH2CH2NH2 is a PEG linker containing an amine group and a benzyl (Cbz) protecting group. The hydrophilic PEG spacer increases the water solubility of a compound in aqueous media. Amine group is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde), etc. The benzyl protecting group can be removed via hydrogenolysis to form a free amine. Reagent grade, for research use only.

3-[2-(Cbz-amino)ethoxy]propanoic acid is a PEG linker containing an carboxylic acid (CO2H) group and a benzyl (Cbz) protecting group. The terminal carboxylic acid is reactive with primary amine groups in the presence of activators (e.g. HATU) forming a stable amide bond. The benzyl protecting group can be removed via hydrogenolysis to form a free amine. Reagent grade, for research use only.

2,5-Dioxopyrrolidin-1-yl 2-(prop-2-yn-1-yloxy)acetate is a Click Chemistry reagent with a propargyl group and an NHS ester group. The propargyl group can react with biomolecules containing azide group via copper catalyzed Click Chemistry reaction. The NHS ester is an amine reactive group which can be used for derivatizing peptides, antibodies, amine coated surfaces, etc. Reagent grade, for research use only.

Thalidomide serves as a ligand in PROTAC development, recruiting the Cereblon (CRBN) E3 ligase complex to the target protein. This recruitment brings the target protein and E3 ligase into close proximity, resulting in polyubiquitination of the substrate and subsequent degradation by the proteasome

(Fmoc-Cys-OtBu)2 (Disulfide bond) is a cystine dipeptide which is linked through an oxidized disulfide bond. This molecule can be used in the synthesis of cleavable disulfide linkers.

Thiol-PEG2-acid is a PEG linker containing a thiol group and a terminal carboxylic acid. The hydrophilic PEG spacer increases solubility in aqueous media. The thiol group reacts with maleimide, OPSS, vinylsulfone and transition metal surfaces including gold, silver, etc. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) to form a stable amide bond. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

m-PEG7-thiol is a PEG linker containing a thiol group. The thiol group reacts with maleimide, OPSS, vinylsulfone and transition metal surfaces including gold, silver, etc. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

C18-PEG5-Acid is a hybrid linker featuring a hydrophobic C18 chain and hydrophilic PEG5 spacer with a carboxylic acid. The carboxylic acid is reactive with amines to form a stable amide bond.