PE932040: Galα(1-3)lactose-β-PEG4-Acid label-new The methyl ester serves as

The methyl ester serves as a stable

4-tri-O-acetyl-β-D-xylopyranosyl)-L-serine

87 / / Darolutamide-d4 / ODM-201-d4

/ β-GlcNAc-PEG3-Azide (Peracetate) / β-GlcNAc-PEG3-N3 (Peracetate)

and the acetate groups are removed under mild base (e

PE932040: Galα(1-3)lactose-β-PEG4-Acid label-new The methyl ester serves asN A N A A Gal1 3lactose ( Gal epitope) ligand equipped with a terminal carboxylic acid through a hydrophilic PEG4 spacer. The carboxylic acid can be activated to NHS, sulfo NHS, or pentafluorophenyl esters and reacted with amine functionalized platforms or lysine residues on proteins and peptides to form amide bonds. This compound presents a terminal Gal1 3 linkage corresponding to the Gal epitope (Gal1 3Gal1 4GlcNAc Gal1 3lactose), the target of