MOPS is frequently used as a buffering agent in biology and biochemistry. It used widely for polyacrylamide gel electrophoresis. It is used as a A morpholino propanesulfonic acid buffer.
MM Santoro.; DW Bolen. A test of the linear extrapolation of unfolding free energy changes over an extended denaturant concentration range. Biochemistry. 1992, 31, (20), 4901-4907.