20806-73-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20806-73-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,8,0 and 6 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 20806-73:
(7*2)+(6*0)+(5*8)+(4*0)+(3*6)+(2*7)+(1*3)=89
89 % 10 = 9
So 20806-73-9 is a valid CAS Registry Number.