1166-81-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1166-81-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,1,6 and 6 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1166-81:
(6*1)+(5*1)+(4*6)+(3*6)+(2*8)+(1*1)=70
70 % 10 = 0
So 1166-81-0 is a valid CAS Registry Number.