BES

Name: BES
Brand: SIGMA

BioXtra, Molecular Biology, ≥99.5% (T)

Synonym(s):

N,N-Bis(2-hydroxyethyl)-2-aminoethanesulfonic acid, N,N-Bis(2-hydroxyethyl)taurine

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About This Item

Empirical Formula (Hill Notation):

C₆H₁₅NO₅S

CAS Number:

10191-18-1

Molecular Weight:

213.25

EC Number:

233-465-5

UNSPSC Code:

12161700

PubChem Substance ID:

57647223

Beilstein/REAXYS Number:

1781572

MDL number:

MFCD00007533

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Key Documents

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Product Name

BES, BioXtra, Molecular Biology, ≥99.5% (T)

InChI key

AJTVSSFTXWNIRG-UHFFFAOYSA-N

InChI

1S/C6H15NO5S/c8-4-1-7(2-5-9)3-6-13(10,11)12/h8-9H,1-6H2,(H,10,11,12)

SMILES string

OCCN(CCO)CCS(O)(=O)=O

grade

Molecular Biology

product line

BioXtra

assay

≥99.5% (T)

form

powder or crystals

impurities

DNases, none detected
RNases, none detected
insoluble matter, passes filter test
phosphatases, none detected
proteases, none detected

ign. residue (900 °C)

≤0.05%

pH

2.5-5.0 (25 °C, 1 M in H₂O)

useful pH range

6.4-7.8

pKa (25 °C)

7.1

solubility

H₂O: 1 M at 20 °C, clear, colorless

anion traces

chloride (Cl^-): ≤50 mg/kg
sulfate (SO₄^2-): ≤100 mg/kg

cation traces

Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

λ

1 M in H₂O

UV absorption

λ: 260 nm A_max: 0.095
λ: 280 nm A_max: 0.080

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Application

BES, or N,N-Bis(2-hydroxyethyl)-2-aminoethanesulfonic acid, can be used to study molecular biology, biological buffers, molecular biology reagents and zwitterionic compounds. BES has been used to study versatile catalyst precursors for mild hydrocarboxylation of alkanes to carboxylic acids. BES has also been used to determine that saline and buffers minimize the action of interfering factors in the bacterial endotoxins test.

Storage Class

13 - Non Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Topologically unique heterometallic Cu(II)/Li coordination polymers self-assembled from N,N-bis(2-hydroxyethyl)-2-aminoethanesulfonic acid biobuffer: versatile catalyst precursors for mild hydrocarboxylation of alkanes to carboxylic acids.

Marina V Kirillova et al.

Inorganic chemistry, 51(9), 5224-5234 (2012-04-10)

The facile aqueous medium reactions of copper(II) nitrate with BES biobuffer [(HOCH(2)CH(2))(2)N(CH(2)CH(2)SO(3)H), hereinafter referred as H(3)bes] in the presence of various benzenecarboxylic acids [benzoic (Hba), 3-hydroxybenzoic (Hhba), and 3,5-dihydroxybenzoic (Hdhba) acid] and lithium hydroxide gave rise to the self-assembly generation

Molecular Oxygen Induced in-Gap States in PbS Quantum Dots.

Yingjie Zhang et al.

ACS nano, 9(10), 10445-10452 (2015-09-25)

Artificial solids composed of semiconductor quantum dots (QDs) are being developed for large-area electronic and optoelectronic applications, but these materials often have defect-induced in-gap states (IGS) of unknown chemical origin. Here we performed scanning probe based spectroscopic analysis and density

Interface Promoted Reversible Mg Insertion in Nanostructured Tin-Antimony Alloys.

Yingwen Cheng et al.

Advanced materials (Deerfield Beach, Fla.), 27(42), 6598-6605 (2015-10-01)

An interface promoted approach is developed for guiding the design of stable and high capacity materials for Mg batteries using SnSb alloys as model materials. Experimental and theoretical studies reveal that the SnSb alloy has exceptionally high reversible capacity (420

Hydrogenotrophic culture enrichment reveals rumen Lachnospiraceae and Ruminococcaceae acetogens and hydrogen-responsive Bacteroidetes from pasture-fed cattle.

Emma J Gagen et al.

FEMS microbiology letters, 362(14) (2015-06-26)

Molecular information suggests that there is a broad diversity of acetogens in the rumen, distinct from any currently isolated acetogens. We combined molecular analysis with enrichment culture techniques to investigate this diversity further. Methane-inhibited, hydrogenotrophic enrichment cultures produced acetate as

Acid dissociation constants and pH values for standard "bes" and "tricine" buffer solutions in 30, 40, and 50 mass% dimethyl sulfoxide/water between 25 and -25 degrees C.

R N Roy et al.

Cryobiology, 22(6), 589-600 (1985-12-01)

Information is given concerning two standard buffer solutions suitable as pH references in 30, 40, and 50 mass% dimethyl sulfoxide (DMSO)/H2O mixed solvents at subzero temperatures from -20 to 0 degrees C, with the intention of establishing a pH (designated

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BES