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517104-05-1

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517104-05-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 517104-05-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,1,7,1,0 and 4 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 517104-05:
(8*5)+(7*1)+(6*7)+(5*1)+(4*0)+(3*4)+(2*0)+(1*5)=111
111 % 10 = 1
So 517104-05-1 is a valid CAS Registry Number.

517104-05-1Relevant articles and documents

Synthetic studies on CP-225,917 and CP-263,114: Access to advanced tetracyclic systems by intramolecular conjugate displacement and [2,3]-wittig rearrangement

Malihi, Farzad,Clive, Derrick L. J.,Chang, Che-Chien,Minaruzzaman

, p. 996 - 1013 (2013/04/10)

An advanced intermediate related to the structures of CP-225,917 and CP-263,114 was constructed by a sequence based on the use of Grob-like fragmentation, intramolecular conjugate displacement, and [2,3]-Wittig rearrangement. A variant of the [2,3]-Wittig rearrangement was developed.

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