16565-66-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16565-66-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,5,6 and 5 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 16565-66:
(7*1)+(6*6)+(5*5)+(4*6)+(3*5)+(2*6)+(1*6)=125
125 % 10 = 5
So 16565-66-5 is a valid CAS Registry Number.