2154-34-9 Usage
General Description
The chemical [(2,2,5,5-Tetramethyl-3-oxo-pyrrolizino)oxy]radical, also known as TEMPO, is a stable nitroxyl radical compound with the molecular formula C9H18NO. It is commonly used as a catalyst in organic and polymer chemistry reactions, specifically in the oxidation of alcohols to aldehydes and ketones. TEMPO's unique structure and reactivity make it a versatile and valuable reagent in various synthetic applications. Additionally, it is also employed as a stable free radical probe in biological studies and as a spin-label in electron paramagnetic resonance (EPR) spectroscopy. Overall, TEMPO plays a crucial role in the advancement of chemical and biochemical research and applications.
Check Digit Verification of cas no
The CAS Registry Mumber 2154-34-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,5 and 4 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 2154-34:
(6*2)+(5*1)+(4*5)+(3*4)+(2*3)+(1*4)=59
59 % 10 = 9
So 2154-34-9 is a valid CAS Registry Number.
2154-34-9Relevant articles and documents
Krinizkaja et al.
, (1965)
INFLUENCE OF CHEMICAL STRUCTURE OF NITROXYL SPIN LABELS ON THEIR REDUCTION BY ASCORBIC ACID
Couet, W. R.,Brasch, R. C.,Sosnovsky, G.,Lukszo, J.,Prakash, I.,et. al.
, p. 1165 - 1172 (2007/10/02)
The influence of structure on the reduction of nitroxyl spin labels by ascorbic acid was examined using both piperidine and pyrrolidine nitroxyls.A five-fold molar excess of ascorbic acid and pH of 7.4 were used.The nitroxyl concentration was measured by electron spin resonance spectrometry.The five-membered (pyrrolidine) nitroxyls were more stable than the six-membered derivatives.Ring substituents also influenced the reaction.The anionic derivatives were more stable than the unionized compounds which, in turn, were more stable than the amines (cations at pH 7.4).
