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1017952-97-4

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1017952-97-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1017952-97-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,1,7,9,5 and 2 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1017952-97:
(9*1)+(8*0)+(7*1)+(6*7)+(5*9)+(4*5)+(3*2)+(2*9)+(1*7)=154
154 % 10 = 4
So 1017952-97-4 is a valid CAS Registry Number.

1017952-97-4Relevant articles and documents

N,N′-diarylureas: A new family of atropisomers exhibiting highly diastereoselective reactivity

Clayden, Jonathan,Turner, Hazel,Helliwell, Madeleine,Moir, Elizabeth

, p. 4415 - 4423 (2008/09/21)

(Chemical Equation Presented) 2,6-Disubstituted N-aryl ureas rotate slowly about their Ar-N bonds and can exist as separable atropisomers. They also react remarkably diastereoselectively, with the urea axis controlling new stereogenic centers with high fidelity in a variety of nucleophilic and electrophilic addition reactions. The sense of diastereoselectivity in lateral lithiation-electrophilic quench reactions is electrophile-dependent and appears to be the result of stereospecific reaction with one of two interconvertible diastereoisomeric organolithiums.

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