840-93-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 840-93-7 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, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 840-93:
(5*8)+(4*4)+(3*0)+(2*9)+(1*3)=77
77 % 10 = 7
So 840-93-7 is a valid CAS Registry Number.