166111-53-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 166111-53-1 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 1 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 166111-53:
(8*1)+(7*6)+(6*6)+(5*1)+(4*1)+(3*1)+(2*5)+(1*3)=111
111 % 10 = 1
So 166111-53-1 is a valid CAS Registry Number.