4-Methoxyphenyl 3-O-Allyl-β-D-galactopyranoside is an organic compound from the galactoside family. It serves as a structural unit in synthesizing more complex glycosides and glycoconjugates. The compound finds various applications in biochemical research, particularly in studies of carbohydrate metabolism and protein-carbohydrate interactions. It contains an allyl protective group, which can be selectively removed under palladium-catalyzed conditions to reveal a hydroxyl functional group for further chemical modification.