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481432

Sigma-Aldrich

Cyanogen bromide

99.995% trace metals basis

Synonym(s):

Bromine cyanide

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About This Item

Linear Formula:
BrCN
CAS Number:
506-68-3
Molecular Weight:
105.92
Beilstein/REAXYS Number:
1697296
EC Number:
208-051-2
MDL number:
MFCD00011597
UNSPSC Code:
12352100
PubChem Substance ID:
24871758
NACRES:
NA.22

vapor density

3.65 (vs air)

vapor pressure

100 mmHg ( 22.6 °C)

assay

99.995% trace metals basis

bp

61-62 °C (lit.)

mp

50-53 °C (lit.)

storage temp.

2-8°C

SMILES string

BrC#N

InChI

1S/CBrN/c2-1-3

InChI key

ATDGTVJJHBUTRL-UHFFFAOYSA-N

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General description

Cyanogen bromide (CNBr) is a halogen halide. Its utility as a condensing agent during chemical ligation of oligodeoxyribonucleotides has been reported. Its threshold photoelectron (TPE) spectrum has been recorded under high resolution. The cryopolymerization of CNBr on irradiation has been investigated.

Application

Cyanogen bromide may be used:
  • To activate polysaccharides for coupling with erythrocytes.
  • As an oxidizing agent in the urine thaimine assay.
  • In the preparation of 2-amino-5-(2′-thienyl)-1,3,4-oxadiazole.
Reaction with C60Ph5Cl produces a novel phenylated isoquinolino[3′,4′:1,2][60]fullerene.

signalword

Danger

Hazard Classifications

Acute Tox. 2 Dermal - Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - Aquatic Acute 1 - Eye Dam. 1 - Skin Corr. 1B

supp_hazards

EUH032

Storage Class

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk_germany

WGK 3

flash_point_f

>149.0 °F - closed cup

flash_point_c

> 65 °C - closed cup

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges, type P3 (EN 143) respirator cartridges

Certificates of Analysis (COA)

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N I Sokolova et al.
FEBS letters, 232(1), 153-155 (1988-05-09)
Cyanogen bromide was found to condense oligodeoxyribonucleotides on a complementary template in aqueous solution. Optimum conditions for this vigorous and effective reaction were developed. CNBr proved to be useful for incorporation of phosphoramidate or pyrophosphate internucleotide bonds in DNA duplexes.
Threshold photoelectron spectroscopy of cyanogen bromide.
Yencha AJ, et al.
Chemical Physics Letters, 392(1), 202-208 (2004)
Oxadiazole: a biologically important heterocycle.
Somani RR and Shirodkar PY.
Der Pharma Chemica, 1(1), 130-140 (2009)
Cyanogen bromide, a good reagent for assay of thiamine in urine.
K Ratanaubolchai et al.
Clinical chemistry, 25(9), 1670-1671 (1979-09-01)
Low-temperature radiation polymerization of cyanogen bromide.
Kichigina GA, et al.
Mendeleev Communications, 8(4), 159-160 (1998)
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