81022-09-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81022-09-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,0,2 and 2 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81022-09:
(7*8)+(6*1)+(5*0)+(4*2)+(3*2)+(2*0)+(1*9)=85
85 % 10 = 5
So 81022-09-5 is a valid CAS Registry Number.