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Merck
CN

56748

Sigma-Aldrich

咪唑

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

别名:

1,3-二氮杂-2,4-环戊二烯, 甘恶啉

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About This Item

经验公式(希尔记法):
C3H4N2
CAS号:
分子量:
68.08
Beilstein:
103853
EC 号:
MDL编号:
UNSPSC代码:
12352005
eCl@ss:
39161001
PubChem化学物质编号:
NACRES:
NA.25

等级

for molecular biology

质量水平

蒸汽压

<1 mmHg ( 20 °C)

产品线

BioUltra

检测方案

≥99.5% (GC)

形式

flakes
powder or crystals

杂质

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

灼烧残渣 (900 °C)

≤0.05%

pH值(酸碱度)

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.)

溶解性

H2O: 0.1 M at 20 °C, clear, colorless

痕量阴离子

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

痕量阳离子

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字符串

c1c[nH]cn1

λ

0.1 M in H2O

紫外吸收

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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应用

咪唑可用于制备在25℃下pH范围6.2-7.8的缓冲液。它被推荐作为辣根过氧化物酶测定缓冲液的一个组分,并作为螯合剂用于各种二价阳离子的结合。咪唑可用于从二价阳树脂中洗脱含组氨酸的蛋白质(SigmaP6611,HisSelect.-HC镍亲和凝胶),也可用于检测蛋白质的SDS-PAGE凝胶的反向染色。
特别适用于 pH 6.2-7.8 范围内的缓冲液

其他说明

综述:作为RNase模型

警示用语:

Danger

危险声明

危险分类

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

WGK

WGK 2

个人防护装备

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


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Review: As RNase model.
R. Breslow
Accounts of Chemical Research, 24, 317-317 (1991)
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
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
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
Thangavel Vaijayanthi et al.
Bioorganic & medicinal chemistry, 21(4), 852-855 (2013-01-15)
Fluorophores that are conjugated with N-methylpyrrole-N-methylimidazole (Py-Im) polyamides postulates versatile applications in biological and physicochemical studies. Here, we show the design and synthesis of new types of pyrene-conjugated hairpin Py-Im polyamides (1-5). We evaluated the steady state fluorescence of the

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