663208-57-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 663208-57-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,3,2,0 and 8 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 663208-57:
(8*6)+(7*6)+(6*3)+(5*2)+(4*0)+(3*8)+(2*5)+(1*7)=159
159 % 10 = 9
So 663208-57-9 is a valid CAS Registry Number.