β-(N-Morpholino)ethanesufonic acid (MES) monohydrate ≥98%, white crystalline powder

Supplier: MP BIOMEDICALS (FKA ICN BIOMED

Synonyms: 2-Morpholinoethanesulphonic acid hydrate2-(N-Morpholino)ethanesulfonic acid monohydrate2-(N-Morpholino)ethanesulphonic acid monohydrate2-Morpholinoethanesulfonic acid hydrate

0219530983 0219530980 0219530910 0219530991 0219530925
IC19530925EA 61.75 USD
IC19530925 IC19530910 IC19530983 IC19530980 IC19530991
β-(N-Morpholino)ethanesufonic acid (MES) monohydrate ≥98%, white crystalline powder
β-(N-Morpholino)ethanesulphonic acid (MES) monohydrate

MES is a zwitterionic buffer.


MES is regarded as one of the "Good" buffers developed for biological applications. It has the advantages of: midrange pKa, maximum water solubility and minimum solubility in all other solvents,minimal salt effects, minimal change in pK with temperature chemically and enzymatically stable, minimal absorption in visible or UV spectral range.


Soluble in water (0.5 M or higher yields a clear and colorless solution).

Formula: C₆H₁₃NO₄S·1H₂O
MW: 213.25 g/mol
MDL Number: MFCD00149409
CAS Number: 145224-94-8
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Specification Test Results

Purity ≥98%
OD260 (5% aq soln) 0.3
Loss on Drying 10%
pH 2.5 - 4.0 (1% aq solution)
pka 6.1 at 25 °C

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