MOPSO sodium salt is a zwitterionic aminosulfonate buffer that is very similar in structure to MOPS (3-morpholinopropanesulfonic acid), differing by the presence of a hydroxyl group on C-2 of the propane moiety.

Tricine was first prepared by Good for use as a buffer for chloroplast reactions. It is structurally similar to Tris, but is much less inhibitory at high concentrations. For ATP assays using firefly luciferase, tricine buffer at 25 mM was found to be the best of ten common buffers tested. …