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270901-52-5

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270901-52-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 270901-52-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,7,0,9,0 and 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 270901-52:
(8*2)+(7*7)+(6*0)+(5*9)+(4*0)+(3*1)+(2*5)+(1*2)=125
125 % 10 = 5
So 270901-52-5 is a valid CAS Registry Number.

270901-52-5Downstream Products

270901-52-5Relevant articles and documents

Factors influencing the C-O bond homolysis of alkoxyamines: Effects of H-bonding and polar substituents

Marque,Fischer,Baier,Studer

, p. 1146 - 1156 (2007/10/03)

The synthesis of various new trialkylhydroxylamines is described. The rate constant of the C-O bond cleavage of these new alkoxyamines has been measured. For example, C-O bond homolysis rates in a series of para-substituted TEMPO-styryl compounds TEMPO-CH(CH3)C6H5X 1a (p-MeO), 1b (p-Me), 1d (p-H), 1e (p-Br), and 1f (p-MeO2C) are presented. Furthermore, rate constants for the C-O bond cleavage of α-heteroaryl-substituted secondary alkoxyamines are discussed. A correlation by which the rate constant for the C-O bond cleavage of TEMPO-derived alkoxyamines can be predicted from the C-H BDEs of the corresponding alkanes is presented. Solvent effects as well as the effect of camphorsulfonic acid on the rate of the C-O bond homolysis are discussed. Finally, EPR and kinetic evidence show that alkoxyamines derived from nitroxides which are capable of intramolecular H-bonding undergo C-O bond cleavage faster than the corresponding non-H-bond-forming analogues.

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