840-82-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 840-82-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,4 and 0 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 840-82:
(5*8)+(4*4)+(3*0)+(2*8)+(1*2)=74
74 % 10 = 4
So 840-82-4 is a valid CAS Registry Number.