1221230-57-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1221230-57-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,1,2,3 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1221230-57:
(9*1)+(8*2)+(7*2)+(6*1)+(5*2)+(4*3)+(3*0)+(2*5)+(1*7)=84
84 % 10 = 4
So 1221230-57-4 is a valid CAS Registry Number.
1221230-57-4Relevant articles and documents
The tetrazole 3-N-oxide synthesis
Harel, Tal,Rozen, Shlomo
experimental part, p. 3141 - 3143 (2010/08/03)
An efficient procedure for transferring an oxygen atom to the 1- or 2-substituted 5-alkyl or aryl tetrazole ring, resulting, for the first time, in the corresponding N-oxides, was developed using HOF'CH3CN. This novel route features mild condit
