166116-97-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 166116-97-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,1,1 and 6 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 166116-97:
(8*1)+(7*6)+(6*6)+(5*1)+(4*1)+(3*6)+(2*9)+(1*7)=138
138 % 10 = 8
So 166116-97-8 is a valid CAS Registry Number.