117662-97-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117662-97-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,6,6 and 2 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 117662-97:
(8*1)+(7*1)+(6*7)+(5*6)+(4*6)+(3*2)+(2*9)+(1*7)=142
142 % 10 = 2
So 117662-97-2 is a valid CAS Registry Number.