CAS:2154-68-9 | 3-Carboxy-2,2,5,5-tetramethylpyrrolidine 1-Oxyl Free Radical

Name:3-Carboxy-2,2,5,5-tetramethylpyrrolidine 1-Oxyl Free Radical

Synonyms:3-Carboxy-PROXYL Free Radical

CAS:2154-68-9

Purity:98%min

Molecular Formula:C₉H₁₆NO₃

Molecular Weight:186.23

Melting Point:200ºC (dec.)

Boiling Point:307.2ºC at 760mmHg

Flash Point:139.6ºC

EINECS:218-448-2

Density:1.129g/cm³

PSA:60.77

LogP:1.28

Appearance:Light orange to Yellow to Green powder to crystal

Stability:Heat Sensitive

Solubility:Soluble in water (partly miscible), methanol (50 mg/ml), acetone, dichloromethane and chloroform.

Storage condition:Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Recommended storage temperature is 2 - 8°C.

Application:3-Carboxy-2,2,5,5-tetramethylpyrrolidine 1-Oxyl Free Radical(CAS:2154-68-9) is used in the synthesis and reactions of stable nitroxyl radicals. It is also used to study molecular migration and long-term stability of seeds and pollen and used in the preparation of a tetraphenylporphyrin bearing a nitroxyl radical.

Reference: 

 Prof. E. W. Meijer.; Dr. Johan F. G. A. Jansen.; Dr. René A. J. Janssen.; Dr. Ellen M. M. de Brabandero-van den Berg.; Prof. E. W. Meijer. Triplet radical pairs of 3-carboxyproxyl encapsulated in a dendritic box. Advanced Materials. 1995, 7 (6), 561-564.

S. Dikalov.; M. Skatchkov.; E. Bassenge. Spin Trapping of Superoxide Radicals and Peroxynitrite by 1-Hydroxy-3-carboxy-pyrrolidine and 1-Hydroxy-2,2,6,6-tetramethyl-4-oxo-piperidine and the Stability of Corresponding Nitroxyl Radicals Towards Biological Reductants. Biochemical and Biophysical Research Communications. 1997, 231 (3), 701-704.

Reviews: Synthesis and reactions of stable nitroxyl radicals: Synthesis, 190, 401 (1971); Advances in the chemistry of nitroxide spin labels: Chem. Rev., 78, 37 (1978); Recent advances in the chemistry of nitroxides and their applications in spin labelling: J. Sci. Ind. Res., 54, 623 (1995).

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