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452096-18-3

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452096-18-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 452096-18-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,5,2,0,9 and 6 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 452096-18:
(8*4)+(7*5)+(6*2)+(5*0)+(4*9)+(3*6)+(2*1)+(1*8)=143
143 % 10 = 3
So 452096-18-3 is a valid CAS Registry Number.

452096-18-3Relevant articles and documents

A straightforward synthesis of enantiopure 2-cyano azetidines from β-amino alcohols

Agami, Claude,Couty, Francois,Evano, Gwilherm

, p. 297 - 302 (2007/10/03)

Enantiopure 2-cyano azetidines were prepared in high yields from β-amino alcohols. This synthesis was shown to be general and is based on two important steps: (i) chlorination of a N-cyanomethylated β-amino alcohol and (ii) a 4-exo-trig ring closure through the alkylation of a lithiated α-amino nitrile. The former step is stereoselective when ephedrine-derived β-amino alcohols are used. In the case of a phenylglycinol-derived β-amino alcohol, this step also involves a rearrangement.

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