Used as a key intermediate in the synthesis of complex oligosaccharides and glycoconjugates, particularly in the construction of galactose-containing structures. Its protecting group pattern—benzoyl groups at positions 2 and 3, and a benzylidene acetal at 4,6—provides excellent regio- and stereocontrol during glycosylation reactions. The thioglycoside moiety acts as a stable glycosyl donor that can be activated selectively under mild conditions, making it valuable in automated and stepwise carbohydrate synthesis. Commonly employed in the development of glycosidase inhibitors, vaccine candidates, and bioactive natural product analogs.