80801-05-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 80801-05-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,8,0 and 1 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 80801-05:
(7*8)+(6*0)+(5*8)+(4*0)+(3*1)+(2*0)+(1*5)=104
104 % 10 = 4
So 80801-05-4 is a valid CAS Registry Number.