843-72-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 843-72-1 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 3 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 843-72:
(5*8)+(4*4)+(3*3)+(2*7)+(1*2)=81
81 % 10 = 1
So 843-72-1 is a valid CAS Registry Number.