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80958-76-5

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80958-76-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 80958-76-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,9,5 and 8 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 80958-76:
(7*8)+(6*0)+(5*9)+(4*5)+(3*8)+(2*7)+(1*6)=165
165 % 10 = 5
So 80958-76-5 is a valid CAS Registry Number.

80958-76-5Relevant articles and documents

Single and Double Stereoselective Ring Expansion of 1,2,3,4-Tetrahydro-1,4-naphthalenedimethanol Ditosylates

Dumitriu, Angela,Elian, Mihai,Cioranescu, Ecaterina

, p. 324 - 333 (2007/10/02)

The formolysis of cis- and trans-ditosylates 7a and 7b yielded the mixed esters 13 (at 55 deg C) or the diols 11 (at 100 deg C, after LAH reduction) by single and double ring expansion, respectively.The reactions are stereoselective, occuring with retention of configuration, which points to the intermediacy of phenonium ions.

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