73111-18-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73111-18-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,1,1 and 1 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 73111-18:
(7*7)+(6*3)+(5*1)+(4*1)+(3*1)+(2*1)+(1*8)=89
89 % 10 = 9
So 73111-18-9 is a valid CAS Registry Number.