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Key Documents

SML1961

Sigma-Aldrich

EF5

≥98% (HPLC)

同義詞:

2-(2-Nitro-1H-imidazol-1-yl)-N-(2,2,3,3,3-pentafluoropropyl)acetamide, EF-5, NSC 684681

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About This Item

經驗公式(希爾表示法):
C8H7F5N4O3
CAS號碼:
分子量::
302.16
分類程式碼代碼:
12352200
NACRES:
NA.77

品質等級

化驗

≥98% (HPLC)

形狀

powder

顏色

white to beige

溶解度

DMSO: 10 mg/mL, clear

儲存溫度

2-8°C

SMILES 字串

O=C(NCC(F)(F)C(F)(F)F)CN1C=CN=C1[N+]([O-])=O

InChI

1S/C8H7F5N4O3/c9-7(10,8(11,12)13)4-15-5(18)3-16-2-1-14-6(16)17(19)20/h1-2H,3-4H2,(H,15,18)

InChI 密鑰

JGGDSDPOPRWSCX-UHFFFAOYSA-N

生化/生理作用

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.

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3

閃點(°F)

Not applicable

閃點(°C)

Not applicable


分析證明 (COA)

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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
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
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

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