663213-64-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 663213-64-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,3,2,1 and 3 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 663213-64:
(8*6)+(7*6)+(6*3)+(5*2)+(4*1)+(3*3)+(2*6)+(1*4)=147
147 % 10 = 7
So 663213-64-7 is a valid CAS Registry Number.