68641-13-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 68641-13-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,6,4 and 1 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 68641-13:
(7*6)+(6*8)+(5*6)+(4*4)+(3*1)+(2*1)+(1*3)=144
144 % 10 = 4
So 68641-13-4 is a valid CAS Registry Number.