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142437-71-6

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142437-71-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142437-71-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,4,3 and 7 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 142437-71:
(8*1)+(7*4)+(6*2)+(5*4)+(4*3)+(3*7)+(2*7)+(1*1)=116
116 % 10 = 6
So 142437-71-6 is a valid CAS Registry Number.

142437-71-6Relevant articles and documents

Base-Promoted Reaction of O-Sulfonylated Hydroxamic Acids with Nucleophiles. A New Mehtod for the Synthesis of α-Substituted Amides

Hoffman, Ribert V.,Nayyar, Naresh K.,Chen, Wenting

, p. 5700 - 5707 (2007/10/02)

Treatment of a series of hydroxamic acids 2 with mesyl chloride in the presence of 2 equiv of triethylamine at 0 deg C gives 2-chloroamides 3 in good yields.Use of a single equivalent of triethylamine gives the N-(mesyloxy)amides 1, which are versatile sy

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