690961-66-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 690961-66-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,0,9,6 and 1 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 690961-66:
(8*6)+(7*9)+(6*0)+(5*9)+(4*6)+(3*1)+(2*6)+(1*6)=201
201 % 10 = 1
So 690961-66-1 is a valid CAS Registry Number.