1616972-91-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1616972-91-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,6,9,7 and 2 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1616972-91:
(9*1)+(8*6)+(7*1)+(6*6)+(5*9)+(4*7)+(3*2)+(2*9)+(1*1)=198
198 % 10 = 8
So 1616972-91-8 is a valid CAS Registry Number.