68917-31-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 68917-31-7 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, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 68917-31:
(7*6)+(6*8)+(5*9)+(4*1)+(3*7)+(2*3)+(1*1)=167
167 % 10 = 7
So 68917-31-7 is a valid CAS Registry Number.