196957-16-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 196957-16-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,6,9,5 and 7 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 196957-16:
(8*1)+(7*9)+(6*6)+(5*9)+(4*5)+(3*7)+(2*1)+(1*6)=201
201 % 10 = 1
So 196957-16-1 is a valid CAS Registry Number.