664315-71-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 664315-71-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,4,3,1 and 5 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 664315-71:
(8*6)+(7*6)+(6*4)+(5*3)+(4*1)+(3*5)+(2*7)+(1*1)=163
163 % 10 = 3
So 664315-71-3 is a valid CAS Registry Number.