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I0250

Sigma-Aldrich

Imidazole

≥99% (titration), crystalline

Synonym(s):

1,3-Diaza-2,4-cyclopentadiene, Glyoxaline

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About This Item

Empirical Formula (Hill Notation):
C3H4N2
CAS Number:
288-32-4
Molecular Weight:
68.08
Beilstein:
103853
EC Number:
206-019-2
MDL number:
MFCD00005183
UNSPSC Code:
12352005
eCl@ss:
39161001
PubChem Substance ID:
24895898
NACRES:
NA.25

vapor pressure

<1 mmHg ( 20 °C)

Assay

≥99% (titration)

form

crystalline

impurities

≤0.005% Fluorescence blank (β-NADH equivalence.)

color

white

pH

6.2-7.8 (25 °C)

pKa (25 °C)

6.95

bp

256 °C (lit.)

mp

88-91 °C (lit.)

solubility

water: 500 mg/mL, clear, colorless to very faintly yellow

storage temp.

room temp

SMILES string

c1c[nH]cn1

InChI

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

InChI key

RAXXELZNTBOGNW-UHFFFAOYSA-N

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Application

Excellent for buffers in the range of pH 6.2-7.8

Signal Word

Danger

Hazard Statements

H302,H314,H360D

Hazard Classifications

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

Storage Class Code

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

WGK

WGK 2

Flash Point(F)

293.0 °F - closed cup

Flash Point(C)

145 °C - closed cup

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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Imidazole buffer Solution BioUltra, 1&#160;M in H2O

Sigma-Aldrich

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Ribonucleotide reductase (RnR) is a key enzyme synthesizing deoxyribonucleotides for DNA replication and repair. In mammals, the R1 catalytic subunit forms an active complex with either one of the two small subunits R2 and p53R2. Expression of R2 is S
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The conserved budding yeast Rad51 paralogues, including Rad55, Rad57, Csm2 and Psy3 are indispensable for homologous recombination (HR)-mediated chromosome damage repair. Rad55 and Rad57 are associated in a heterodimer, while Csm2 and Psy3 form the Shu complex with Shu1 and
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Proceedings of the National Academy of Sciences of the United States of America, 112(28), E3669-E3678 (2015-07-01)
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