217449-11-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 217449-11-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,7,4,4 and 9 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 217449-11:
(8*2)+(7*1)+(6*7)+(5*4)+(4*4)+(3*9)+(2*1)+(1*1)=131
131 % 10 = 1
So 217449-11-1 is a valid CAS Registry Number.