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1018481-46-3

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1018481-46-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1018481-46-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,1,8,4,8 and 1 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1018481-46:
(9*1)+(8*0)+(7*1)+(6*8)+(5*4)+(4*8)+(3*1)+(2*4)+(1*6)=133
133 % 10 = 3
So 1018481-46-3 is a valid CAS Registry Number.

1018481-46-3Relevant 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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