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56748

Sigma-Aldrich

Imidazol

BioUltra, for molecular biology, ≥99.5% (GC)

Sinónimos:

1,3-Diaza-2,4-ciclopentadieno, Glioxalina

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About This Item

Fórmula empírica (notación de Hill):
C3H4N2
Número de CAS:
288-32-4
Peso molecular:
68.08
Beilstein/REAXYS Number:
103853
EC Number:
206-019-2
MDL number:
MFCD00005183
UNSPSC Code:
12352005
eCl@ss:
39161001
PubChem Substance ID:
57651596
NACRES:
NA.25

grade

for molecular biology

Quality Level

200

vapor pressure

<1 mmHg ( 20 °C)

product line

BioUltra

assay

≥99.5% (GC)

form

flakes
powder or crystals

impurities

DNases, none detected
 RNases, none detected
 insoluble matter, passes filter test
 phosphatases, none detected
 proteases, none detected
≤0.2% water

ign. residue (900 °C)

≤0.05%

pH

9.5-11.0 (25 °C, 0.1 M in H2O)

pKa (25 °C)

6.95

bp

256 °C (lit.)

mp

88-91 °C (lit.)

solubility

H2O: 0.1 M at 20 °C, clear, colorless

anion traces

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤50 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

SMILES string

c1c[nH]cn1

λ

0.1 M in H2O

UV absorption

λ: 260 nm Amax: 0.10
λ: 280 nm Amax: 0.10

InChI

1S/C3H4N2/c1-2-5-3-4-1/h1-3H,(H,4,5)

InChI key

RAXXELZNTBOGNW-UHFFFAOYSA-N

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Application

Imidazole can be used to prepare buffers in the pH range of 6.2-7.8 at 25°C. It is recommended as a component of a buffer for assay of horseradish peroxidase and as chelator for the binding of various divalent cations. Imidazole can be used for the elution of histidine containing proteins from divalent cation resins (Sigma P6611, HisSelect.-HC Nickel affinity gel) and can also be used in reverse staining of SDS-PAGE gels for detection of proteins.
Excelente para tampones en el intervalo de pH 6,2 - 7,8

Other Notes

Review: As RNase model

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Repr. 1B - Skin Corr. 1C

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk_germany

WGK 2

flash_point_f

293.0 °F - closed cup

flash_point_c

145 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Certificados de análisis (COA)

Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»

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Imidazol United States Pharmacopeia (USP) Reference Standard

USP

1336500

Imidazol

Imidazole for synthesis

Sigma-Aldrich

8.14223

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Imidazol European Pharmacopoeia (EP) Reference Standard

I0086000

Imidazol

Imidazole Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS

Sigma-Aldrich

IX0005

Imidazole

Imidazole ULTROL&#174; Grade, &#8805;99% (1H-NMR), useful in pH range 6.2-7.8

Millipore

4015

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Imidazol Pharmaceutical Secondary Standard; Certified Reference Material

Supelco

PHR1180

Imidazol

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Sigma-Aldrich

I3386

Imidazole hydrochloride

Review: As RNase model.
R. Breslow
Accounts of Chemical Research, 24, 317-317 (1991)
Aviva Levina et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 19(11), 3609-3619 (2013-01-31)
An anti-metastatic drug, NAMI-A ((ImH)[Ru(III) Cl4 (Im)(dmso)]; Im=imidazole, dmso=S-bound dimethylsulfoxide), and a cytotoxic drug, KP1019 ((IndH)[Ru(III) Cl4 (Ind)2 ]; Ind=indazole), are two Ru-based anticancer drugs in human clinical trials. Their reactivities under biologically relevant conditions, including aqueous buffers, protein solutions
Eleonora Petryayeva et al.
Langmuir : the ACS journal of surfaces and colloids, 29(3), 977-987 (2013-01-10)
Methods have been developed for the solid-phase detection of nucleic acids using mixed films of quantum dots (QDs) and oligonucleotide probes in microtiter plates. Polystyrene microwells were functionalized with multidentate imidazole ligands to immobilize QDs. Oligonucleotide hybridization was transduced using
Tomotsugu Awano et al.
Journal of bacteriology, 196(1), 140-147 (2013-10-29)
The genome of Thermococcus kodakarensis, along with those of most Thermococcus and Pyrococcus species, harbors five paralogous genes encoding putative α subunits of nucleoside diphosphate (NDP)-forming acyl coenzyme A (acyl-CoA) synthetases. The substrate specificities of the protein products for three
Joy Rathjen et al.
Reproduction, fertility, and development, 26(5), 703-716 (2013-06-14)
Human embryonic stem (ES) cells have been proposed as a renewable source of pluripotent cells that can be differentiated into various cell types for use in research, drug discovery and in the emerging area of regenerative medicine. Exploitation of this
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