SML1961

Sigma-Aldrich

EF5

≥98% (HPLC)

Sinónimos:
EF-5, NSC 684681, 2-(2-Nitro-1H-imidazol-1-yl)-N-(2,2,3,3,3-pentafluoropropyl)acetamide
Empirical Formula (Hill Notation):
C8H7F5N4O3
Número de CAS:
Peso molecular:
302.16
NACRES:
NA.77
En este momento no podemos mostrarle ni los precios ni la disponibilidad

Quality Level

assay

≥98% (HPLC)

form

powder

color

white to beige

solubility

DMSO: 10 mg/mL, clear

storage temp.

2-8°C

SMILES string

O=C(NCC(F)(F)C(F)(F)F)CN1C=CN=C1N+(O-)=O

Biochem/physiol Actions

EF5 is a 2-nitroimidazole-based hypoxia marker corresponding to a pentafluorinated derivative of the hypoxic cell-radiation sensitizer etanidazole. Under low oxygen (hypoxic) condition, reductive activation of its 2-nitroimidazole moiety leads to enhanced EF5 adduct formation with protein thiols and reduced glutathione. The pentafluorination derivatization substantially decreases the proportion of low molecular weight hydrolytic fragmentation of the adducts, making EF5 superior to etanidazole when utilized as a hypoxia marker by immunohistological staining.

RIDADR

NONH for all modes of transport

WGK Germany

WGK 3

Flash Point F

Not applicable

Flash Point C

Not applicable

S M Evans et al.
British journal of cancer, 72(4), 875-882 (1995-10-01)
One of the most sensitive hypoxia detection methods is based on the observation that binding of nitroimidazoles to cellular macromolecules occurs as a result of hypoxia-dependent bioreduction by cellular nitroreductases. Nitroimidazole-binding techniques provide measurements of hypoxia to virtually any degree...
Sung Hoon Cho et al.
Nature, 537(7619), 234-238 (2016-08-09)
Germinal centres (GCs) promote humoral immunity and vaccine efficacy. In GCs, antigen-activated B cells proliferate, express high-affinity antibodies, promote antibody class switching, and yield B cell memory. Whereas the cytokine milieu has long been known to regulate effector functions that...
E M Lord et al.
Cancer research, 53(23), 5721-5726 (1993-12-01)
Hypoxic cells in tissue pose many medical problems, and there is a need for more accurate measurements of tissue hypoxia. However, measurement of the pO2 and the extent of hypoxia within normal and tumor tissue have proven difficult. One of...

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