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174742-04-2

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174742-04-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 174742-04-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,4,7,4 and 2 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 174742-04:
(8*1)+(7*7)+(6*4)+(5*7)+(4*4)+(3*2)+(2*0)+(1*4)=142
142 % 10 = 2
So 174742-04-2 is a valid CAS Registry Number.

174742-04-2Relevant articles and documents

Novel access to neopentyl-type halogenated cyclopentanoids via olefinic cyclobutanols

Nemoto, Hideo,Shiraki, Motohiro,Fukumoto, Keiichiro

, p. 1347 - 1348 (2007/10/03)

The iodonium ion-mediated ring expansion of olefinic cyclobutanols 20, 21, and 25 gave mixtures of iodoalkylated cyclopentanones 33a-c and 34a-c. On the other hand, the same reaction of 29, 30, and 32 stereoselectively afforded iodoalkylated cyclopentanon

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