81020-67-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81020-67-9 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 0 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 81020-67:
(7*8)+(6*1)+(5*0)+(4*2)+(3*0)+(2*6)+(1*7)=89
89 % 10 = 9
So 81020-67-9 is a valid CAS Registry Number.