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143217-17-8

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143217-17-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143217-17-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,2,1 and 7 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 143217-17:
(8*1)+(7*4)+(6*3)+(5*2)+(4*1)+(3*7)+(2*1)+(1*7)=98
98 % 10 = 8
So 143217-17-8 is a valid CAS Registry Number.

143217-17-8Relevant 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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