111221-73-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 111221-73-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,2,2 and 1 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 111221-73:
(8*1)+(7*1)+(6*1)+(5*2)+(4*2)+(3*1)+(2*7)+(1*3)=59
59 % 10 = 9
So 111221-73-9 is a valid CAS Registry Number.