571-11-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 571-11-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,7 and 1 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 571-11:
(5*5)+(4*7)+(3*1)+(2*1)+(1*1)=59
59 % 10 = 9
So 571-11-9 is a valid CAS Registry Number.