A synthetic glycoconjugate of BSA (neoglycoprotein) where D-lactose (Lac) has been conjugated to BSA at multiple lysines by highly stable amide linkages via a discrete 12-atom tetraethylene glycol (PEG4) linker/spacer system functionalized with carboxylic acid. Lactose is a glycan with sequence (Galβ1-4Glc).
