Description MES, Enzyme Grade, 99.4%, 95g For Research & Development Not for drug, human, animal, or food use Certificate of Analysis: Appearance (Color) White Appearance (Form) Crystalline powder Purity (by Titration) 99.4% Infrared Spectrum Conforms to structure Moisture Content 8.7% PKA 6.07 DNase, RNase, protease none detected Suitable as a biological buffer pH 5.5 to 6.7 CAS: 4432-31-9 FORMULA: C6H13NO4S