20865-90-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20865-90-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,8,6 and 5 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 20865-90:
(7*2)+(6*0)+(5*8)+(4*6)+(3*5)+(2*9)+(1*0)=111
111 % 10 = 1
So 20865-90-1 is a valid CAS Registry Number.