668992-04-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 668992-04-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,8,9,9 and 2 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 668992-04:
(8*6)+(7*6)+(6*8)+(5*9)+(4*9)+(3*2)+(2*0)+(1*4)=229
229 % 10 = 9
So 668992-04-9 is a valid CAS Registry Number.