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257494

Sigma-Aldrich

3-Cyano-PROXYL

for ESR-spectroscopy

Synonym(s):

3-Cyano-2,2,5,5-tetramethyl-1-pyrrolidinyloxy, free radical

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About This Item

Empirical Formula (Hill Notation):
C9H15N2O
CAS Number:
2154-70-3
Molecular Weight:
167.23
MDL number:
MFCD00010548
UNSPSC Code:
12352000
PubChem Substance ID:
24855418
NACRES:
NA.22

grade

for ESR-spectroscopy

form

solid

mp

31-33 °C (lit.)

storage temp.

2-8°C

SMILES string

CC1(C)CC(C#N)C(C)(C)N1[O]

InChI

1S/C9H15N2O/c1-8(2)5-7(6-10)9(3,4)11(8)12/h7H,5H2,1-4H3

InChI key

RQRRZZIMMXPAGX-UHFFFAOYSA-N

General description

Spin label

Application

3-Cyano-PROXYL is a stable free radical that can be used in the ESR technique as a nitroxide standard:
  • For the estimation of relative concentrations of the spin adducts of 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) with ·OH and O2.- radicals.
  • For the determination of free radicals present in an aqueous cigarette tar extract.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302 + H312 + H332

Hazard Classifications

Acute Tox. 4 Oral

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

235.4 °F - closed cup

Flash Point(C)

113 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

PDSCL

Deleterious substance

JAN Code

257494-BULK:
257494-VAR:
257494-10MG:4548173126043
257494-25MG:4548173126050

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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Scavenging of superoxide anion radical by chaparral
Zang L-Y, et al.
Molecular and Cellular Biochemistry, 196(1-2), 157-161 (1999)
Detection of free radicals in aqueous extracts of cigarette tar by electron spin resonance
Zang L-Y, et al.
Free radical biology & medicine, 19(2), 161-167 (1995)
Effect of chlorogenic acid on hydroxyl radical
Zhang L-Y, et al.
Molecular and Cellular Biochemistry, 247(1-2), 205-210 (2003)
S M Hahn et al.
Radiation research, 132(1), 87-93 (1992-10-01)
The nitroxide Tempol, a stable free radical, has recently been shown to protect mammalian cells against several forms of oxidative stress including radiation-induced cytotoxicity. To extend this observation, six additional water-soluble nitroxides with different structural features were evaluated for potential

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