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4-Morpholineethanesulfonic acid - also abbreviated as MES, is a synthetically produced buffer substance from the group of good buffers frequently used in the life sciences.
M 2375 (OTTO) MES, monohydrate, 99% Cas no 145224-94-8 - used in cell culture media, biopharmaceutical buffer formulations (both upstream and downstream), and diagnostic reagents.