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134054-81-2

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134054-81-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 134054-81-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,0,5 and 4 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 134054-81:
(8*1)+(7*3)+(6*4)+(5*0)+(4*5)+(3*4)+(2*8)+(1*1)=102
102 % 10 = 2
So 134054-81-2 is a valid CAS Registry Number.

134054-81-2Relevant articles and documents

Electrophile-induced dearomatizing spirocyclization of N- arylisonicotinamides: A route to spirocyclic piperidines

Arnott, Gareth,Brice, Heloise,Clayden, Jonathan,Blaney, Emma

supporting information; experimental part, p. 3089 - 3092 (2009/05/27)

(Chemical Equation Presented) Treatment of N-arylisonicotinamides with trifluoromethanesulfonic anhydride triggers intramolecular nucleophilic attack of the aryl ring on the 4-position of the pyridinium intermediate. The products are spirocyclic dihydropy

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