Phenyl β-D-galactopyranoside（Cat No.:L045440）is an aromatic glycoside composed of a β-D-galactopyranose sugar linked to a phenyl group via a glycosidic bond. It serves as a model compound in enzymology and carbohydrate chemistry, particularly for studying the activity of β-galactosidase enzymes. The stable glycosidic linkage allows it to mimic natural substrates in biochemical assays. Its structure makes it valuable in the synthesis of glycoconjugates and for probing carbohydrate-protein interactions. Phenyl β-D-galactopyranoside is also used in microbiological research to investigate galactoside transport and metabolism pathways.