63689-71-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 63689-71-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,3,6,8 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 63689-71:
(7*6)+(6*3)+(5*6)+(4*8)+(3*9)+(2*7)+(1*1)=164
164 % 10 = 4
So 63689-71-4 is a valid CAS Registry Number.