920-80-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 920-80-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,2 and 0 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 920-80:
(5*9)+(4*2)+(3*0)+(2*8)+(1*0)=69
69 % 10 = 9
So 920-80-9 is a valid CAS Registry Number.