AMPSO sodium salt (CAS 102029-60-7)

AMPSO sodium salt is a zwitterionic organic chemical compound widely used as a buffering agent in biochemical and molecular biology research. Structurally related to the well-known biological buffer HEPES, AMPSO (2-Amino-2-methyl-1-propanol sulfonic acid sodium salt) is particularly effective in maintaining pH stability in a range from around pH 8.3 to 10.1. This makes it exceptionally useful for experiments that operate in alkaline conditions where traditional buffers like Tris or phosphate buffers may not effectively maintain their buffering capacity. AMPSO sodium salt′s buffering mechanism is attributed to its zwitterionic nature, which allows it to resist changes in pH by absorbing or donating protons in response to changes in the environment. This characteristic is crucial for maintaining the integrity and activity of biological molecules such as enzymes and proteins, especially under varying experimental conditions. In research applications, AMPSO is often employed in the study of enzymatic reactions and protein interactions that require a strictly controlled and stable alkaline pH. Additionally, its use extends to electrophoresis techniques where precise pH control is needed to ensure accurate protein migration and separation. The ability of AMPSO to function effectively at higher pH values without precipitating metal ions or interacting adversely with other components in the solution further enhances its applicability in sensitive biochemical assays.