AMPSO (CAS 68399-79-1)

AMPSO (2-Amino-2-methyl-1-propanol sulfonic acid) is a zwitterionic biological buffer that is extensively used in biochemical and molecular biology research to stabilize pH in biological systems, particularly under conditions where other common buffers might fail. AMPSO has a useful buffering range of 8.3 to 10.1, making it particularly suitable for alkaline applications. Its buffering capacity is crucial in maintaining a stable environment during biochemical reactions that are sensitive to pH fluctuations, such as DNA/RNA extractions and protein solubility studies at higher pH levels. The chemical structure of AMPSO, featuring both amino and sulfonic acid groups, allows it to operate efficiently as a zwitterionic buffer; it can donate or accept protons, thus stabilizing pH by mitigating changes caused by acidic or basic compounds in the solution. This unique property is essential for applications such as electrophoresis and chromatographic techniques where precise pH control is necessary to ensure accurate mobility and separation of biomolecules. In research settings, AMPSO is valued not only for its pH stability but also for its low UV absorbance and minimal interaction with biological molecules, ensuring that it does not interfere with the biochemical processes being studied. This makes AMPSO an indispensable tool in laboratories focusing on high-pH biochemistry and molecular biology protocols.