20169-57-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20169-57-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,1,6 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 20169-57:
(7*2)+(6*0)+(5*1)+(4*6)+(3*9)+(2*5)+(1*7)=87
87 % 10 = 7
So 20169-57-7 is a valid CAS Registry Number.
20169-57-7Relevant articles and documents
A CONVENIENT METHOD FOR THE SYNTHESIS OF CYCLIC IMINO ETHERS
Mohacsi, Erno,Gordon, Eric Michael
, p. 1159 - 1166 (2007/10/02)
A facile procedure for the preparation of cyclic imino ethers from thiocaprolactam and chloroformates is described.