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Chemical Structure| 70340-04-4 Chemical Structure| 70340-04-4

Structure of 70340-04-4

Chemical Structure| 70340-04-4

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Aleksandra Grzelakowska ; Balaraman Kalyanaraman ; Jacek Zielonka ;

Abstract: Peroxynitrite (ONOO‒/ONOOH) is a short-lived but highly reactive species that is formed in the diffusion-controlled reaction between nitric oxide and the superoxide radical anion. It can oxidize certain biomolecules and has been considered as a key cellular oxidant formed under various pathophysiological conditions. It is crucial to selectively detect and quantify ONOO– to determine its role in biological processes. In this review, we discuss various approaches used to detect ONOO‒ in cell-free and cellular systems with the major emphasis on small-molecule chemical probes. We review the chemical principles and mechanisms responsible for the formation of the detectable products, and plausible limitations of the probes. We recommend the use of boronate-based chemical probes for ONOO‒, as they react directly and rapidly with ONOO–, they produce minor but ONOO‒‒specific products, and the reaction kinetics and mechanism have been rigorously characterized. Specific experimental approaches and protocols for the detection of ONOO– in cell-free, cellular, and in vivo systems using boronate-based molecular probes are provided (as shown in BOX 1, BOX 2, BOX 3, BOX 4, BOX 5, BOX 6).

Keywords: peroxynitrite ; molecular ; ; bioluminescence ; chromatography ; biomarkers

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Product Details of [ 70340-04-4 ]

CAS No. :70340-04-4
Formula : C25H22BrOP
M.W : 449.32
SMILES Code : OC1=CC=CC=C1C[P+](C2=CC=CC=C2)(C3=CC=CC=C3)C4=CC=CC=C4.[Br-]
MDL No. :MFCD00011902

Safety of [ 70340-04-4 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319
Precautionary Statements:P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313

Application In Synthesis of [ 70340-04-4 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 70340-04-4 ]

[ 70340-04-4 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 24424-99-5 ]
  • [ 70340-04-4 ]
  • [ 258331-10-1 ]
YieldReaction ConditionsOperation in experiment
30% With triethylamine; In dichloromethane; at 20℃; for 16h; Example 81 {2-[((2R,5S)-5-[(2S)-2-cyanopyrrolidin-1-yl]carbonyl}pyrrolidin-2- yl) methoxy]phenyl}acetic acid Example 81A (2-Hydroxy-phenyl) -acetic acid ter-butyl ester Di-tert-butyl dicarbonate (218 mg, 0.1 mmol) was added to a solution of (2- hydroxybenzyl) triphenylphosphonium bromide (300 mg, 0.67 mmol) and triethylamine (0.32 mL, 0.3 mmol) in dry dichloromethane at room temperature under argon atmosphere. The mixture was stirred for 16 h and then poured into aqueous pH 7 buffer solution. Extraction with ethyl acetate followed by chromatography on silica gel (hexane/ethyl acetate = 4/1) gave desired product (66 mg, 30%). MS (DCI) m/z 330 (M+H) +.
30% With triethylamine; In dichloromethane; at 20℃; for 16h; EXAMPLE 81A (2-Hydroxy-phenyl)-acetic acid tert-butyl ester Di-tert-butyl dicarbonate (218 mg, 0.1 mmol) was added to a solution of (2-hydroxybenzyl)triphenylphosphonium bromide (300 mg, 0.67 mmol) and triethylamine (0.32 mL, 0.3 mmol) in dry dichloromethane at room temperature under argon atmosphere. The mixture was stirred for 16 h and then poured into aqueous pH 7 buffer solution. Extraction with ethyl acetate followed by chromatography on silica gel (hexane/ethyl acetate=4/1) gave desired product (66 mg, 30%). MS (DCI) m/z 330 (M+H)+.
With triethylamine; In dichloromethane; at 20 - 40℃; for 96h;Inert atmosphere; To a suspension of (2-hydroxybenzyl)triphenylphosphonium bromide (CAS 70340-04- 4) (50 g, 1 1 1 mmol) in DCM (500 mL) was added Et3N (46.3 ml_, 334 mmol) at room temperature. c//-ferf-Butyl dicarbonate (40.9 mL, 178 mmol) was added and the reaction was stirred at 40 C for 4 days. The reaction was cooled to room temperature and diluted with DCM and water and the DCM layer was removed, dried and concentrated and absorbed onto silica to purify via FCC (EtOAc-heptane 0-20%) to obtain the title compound. 1H NMR (400 MHz, DMSO-d6) delta ppm 9.39 (s, 1 H) 6.98 - 7.1 1 (m, 2 H) 6.66 - 6.83 (m, 2 H) 3.43 (s, 2 H) 1.39 (s, 9 H).
With triethylamine; In dichloromethane; at 40℃; for 96h; Intermediate 2. tert-Butyl 2-(2-hydroxyphenyl)acetate To a suspension of (2-hydroxybenzyl)triphenylphosphonium bromide (CAS 70340-04- 4) (50 g, 1 1 1 mmol) in DCM (500 mL) was added Et3N (46.3 mL, 334 mmol) at room temperature. cf/'-fe/ -Butyl dicarbonate (40.9 mL, 178 mmol) was added and the reaction mixture was stirred at 40 C for 4 days. The reaction mixture was cooled to room temperature and partitioned between DCM and water. The aqueous layer was extracted with DCM. The combined organics were dried and concentrated. The residue was absorbed onto silica gel and purified by silica gel chromatography (0-20% EtOAc/heptane) to provide the title compound. 1H NMR (400 MHz, DMSO-c/6) delta ppm 9.39 (s, 1 H) 6.98 - 7.1 1 (m, 2 H) 6.66 - 6.83 (m, 2 H) 3.43 (s, 2 H) 1 .39 (s, 9 H).

 

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