4111-11-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4111-11-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,1,1 and 1 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 4111-11:
(6*4)+(5*1)+(4*1)+(3*1)+(2*1)+(1*1)=39
39 % 10 = 9
So 4111-11-9 is a valid CAS Registry Number.