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M5057

Sigma-Aldrich

MES sodium salt

BioReagent, ≥99% (titration), crystalline

Synonym(s):

2-(N-Morpholino)ethanesulfonic acid sodium salt, 4-Morpholineethanesulfonic acid sodium salt

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About This Item

Empirical Formula (Hill Notation):
C6H12NNaO4S
CAS Number:
71119-23-8
Molecular Weight:
217.22
Beilstein:
3765682
EC Number:
275-203-2
MDL number:
MFCD00065473
UNSPSC Code:
12161700
eCl@ss:
32129211
PubChem Substance ID:
24896974
NACRES:
NA.25

product line

BioReagent

Quality Level

400

Assay

≥99% (titration)

form

crystalline

pH

8.9-10.1 (1% in water)

useful pH range

5.5-6.7

pKa 

6.1

solubility

water: 0.5 g/mL, clear, colorless

application(s)

diagnostic assay manufacturing

storage temp.

room temp

SMILES string

[Na+].[O-]S(=O)(=O)CCN1CCOCC1

InChI

1S/C6H13NO4S.Na/c8-12(9,10)6-3-7-1-4-11-5-2-7;/h1-6H2,(H,8,9,10);/q;+1/p-1

InChI key

IRHWMYKYLWNHTL-UHFFFAOYSA-M

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General description

MES is one of the so-called "Good" buffers developed for biological applications. This product is tested for trace ions. A buffer using MES free acid can be prepared by titrating the free acid with sodium hydroxide to the desired pH (pKa=±-1). Alternatively, volumes of equimolar solutions of MES free acid and MES sodium can be mixed to attain the desired pH. Standard mixing tables using stock solutions to prepare a buffer of a given pH have been published.

Application

MES sodium salt has been used:
  • To achieve the required density and stretching of DNA fibers during melting of agarose plugs containing genomic DNA
  • To equilibrate the Balch homogenizer chamber and to prevent sample hydrolysis before sample homogenization

Preparation Note

MES Sodium is soluble in water, giving a clear colourless solution at 25g in 50mL water (approximately 2.3M). The pH of a solution should be between 9 and 10 depending on concentration. Solutions should be stable at 2-8°C for months. Sterilization should be by filteration through 0.2μm filters. Autoclaving is not recommended. If buffers must be nuclease-free, it is best to treat the water first, and then add the buffer solids after autoclaving. When MES solutions are autoclaved, they turn yellow (although pH does not change measurably). The identity of the yellow breakdown product is unknown.

Other Notes

Easily compare specifications for MES sodium salt products with the MES sodium salt specification table.

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WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Dawson, RMC et al.
Data for Biochemical Research, 410-410 (1987)
Good NE et al.
Biochemistry, 5, 467-477 (1966)
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Nature communications, 11(1), 1345-1345 (2020-03-14)
In several metazoans, the number of active replication origins in embryonic nuclei is higher than in somatic ones, ensuring rapid genome duplication during synchronous embryonic cell divisions. High replication origin density can be restored by somatic nuclear reprogramming. However, mechanisms
Pasi S Vuorinen et al.
Journal of chromatography. A, 990(1-2), 45-52 (2003-04-11)
A contactless conductivity detector integrated into the capillary cassette of Agilent (3D)CE equipment is described. The detector is user-friendly, compact and easily modified. The UV detector of the (3D)CE equipment is available parallel with the contactless conductivity detector increasing the
Christian Engelbrekt et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 11(13), 2844-2853 (2010-08-18)
Monodisperse platinum nanoparticles (PtNPs) were synthesized by a green recipe. Glucose serves as a reducing agent and starch as a stabilization agent to protect the freshly formed PtNP cores in buffered aqueous solutions. Among the ten buffers studied, 2-(N-morpholino)ethanesulfonic acid
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