221253-01-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221253-01-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,2,5 and 3 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 221253-01:
(8*2)+(7*2)+(6*1)+(5*2)+(4*5)+(3*3)+(2*0)+(1*1)=76
76 % 10 = 6
So 221253-01-6 is a valid CAS Registry Number.
221253-01-6Relevant articles and documents
Ring opening of cyclopropane in tricyclo[4.3.0.02,9]nonan-3-one with electrophile-nucleophile reagents
Fernandez-Mateos, A.,Alonso, J. J. Perez,Gonzales, R. Rubio
, p. 847 - 860 (2007/10/03)
Four tricyclo[4.3.0.02,9]nonan-3-one systems were treated with TBDMSI, TMSTFA and TMSTFA/NaSPh, affording different cyclopropane cleavage products, depending on the location of the substituent and the nature of the reagent.
