439900-84-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 439900-84-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,9,9,0 and 0 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 439900-84:
(8*4)+(7*3)+(6*9)+(5*9)+(4*0)+(3*0)+(2*8)+(1*4)=172
172 % 10 = 2
So 439900-84-2 is a valid CAS Registry Number.