691868-89-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 691868-89-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,1,8,6 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 691868-89:
(8*6)+(7*9)+(6*1)+(5*8)+(4*6)+(3*8)+(2*8)+(1*9)=230
230 % 10 = 0
So 691868-89-0 is a valid CAS Registry Number.