84543-04-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 84543-04-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,5,4 and 3 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 84543-04:
(7*8)+(6*4)+(5*5)+(4*4)+(3*3)+(2*0)+(1*4)=134
134 % 10 = 4
So 84543-04-4 is a valid CAS Registry Number.