664316-16-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 664316-16-9 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 6 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 664316-16:
(8*6)+(7*6)+(6*4)+(5*3)+(4*1)+(3*6)+(2*1)+(1*6)=159
159 % 10 = 9
So 664316-16-9 is a valid CAS Registry Number.