81109-72-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81109-72-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,1,0 and 9 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 81109-72:
(7*8)+(6*1)+(5*1)+(4*0)+(3*9)+(2*7)+(1*2)=110
110 % 10 = 0
So 81109-72-0 is a valid CAS Registry Number.