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44975-46-4

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44975-46-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 44975-46-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,4,9,7 and 5 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 44975-46:
(7*4)+(6*4)+(5*9)+(4*7)+(3*5)+(2*4)+(1*6)=154
154 % 10 = 4
So 44975-46-4 is a valid CAS Registry Number.

44975-46-4Upstream product

44975-46-4Relevant articles and documents

Rate constants for the β-elimination of tosyl radical from a variety of substituted carbon-centered radicals

Timokhin, Vitaliy I.,Gastaldi, Stephane,Bertrand, Michele P.,Chatgilialoglu, Chryssostomos

, p. 3532 - 3537 (2003)

The rate constants for the β-elimination of tosyl radical (Ts?) from a series of carbon-centered radicals have been determined by using the radical clock methodology. Depending on the substituents R in Ts-CH2-CH(?)R radicals, the rate constants at 293 K vary by more than 2 orders of magnitude in the range of 103-106 s-1. The lowest values were found for the 2-naphthyl and carbamoyl substituents, whereas the benzyl substituent is located at the other extremity. The effect of the substituent upon the stabilization of the starting radical exerts a predominant influence in this reaction in decreasing the rate of fragmentation.

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