1840-66-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1840-66-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,8,4 and 0 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1840-66:
(6*1)+(5*8)+(4*4)+(3*0)+(2*6)+(1*6)=80
80 % 10 = 0
So 1840-66-0 is a valid CAS Registry Number.