68917-04-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 68917-04-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,9,1 and 7 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 68917-04:
(7*6)+(6*8)+(5*9)+(4*1)+(3*7)+(2*0)+(1*4)=164
164 % 10 = 4
So 68917-04-4 is a valid CAS Registry Number.