α-Lactose hydrate (Standard) is the standard substance of α-Lactose hydrate, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. α-Lactose (hydrate) (α-D-Lactose (hydrate)), the main carbohydrate in mammalian milk, comprises two sugar units: glucose and galactose, and occurs as two anomers, α and β. It serves multiple roles in the food and pharmaceutical sectors, including as a free-flowing or agglomerating agent, and a diluent for pigments, flavors, or enzymes .