20728-97-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20728-97-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,7,2 and 8 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 20728-97:
(7*2)+(6*0)+(5*7)+(4*2)+(3*8)+(2*9)+(1*7)=106
106 % 10 = 6
So 20728-97-6 is a valid CAS Registry Number.