698991-19-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 698991-19-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,8,9,9 and 1 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 698991-19:
(8*6)+(7*9)+(6*8)+(5*9)+(4*9)+(3*1)+(2*1)+(1*9)=254
254 % 10 = 4
So 698991-19-4 is a valid CAS Registry Number.