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161868-45-7

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161868-45-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 161868-45-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,8,6 and 8 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 161868-45:
(8*1)+(7*6)+(6*1)+(5*8)+(4*6)+(3*8)+(2*4)+(1*5)=157
157 % 10 = 7
So 161868-45-7 is a valid CAS Registry Number.

161868-45-7Relevant articles and documents

The preparation of α-substituted, β-hydroxy piperidines and pyrrolidines: The total synthesis of febrifugine

Burgess, Laurence E.,Gross, Elizabeth K. M.,Jurka, Joe

, p. 3255 - 3258 (2007/10/03)

Epoxides generated from cyclic ene carbamates are effective N-acyl iminium ion precursors and allow for the preparation of β-hydroxy, α-substituted piperidines and pyrrolidines. The total synthesis of racemic Febrifugine is also described.

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