439859-71-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 439859-71-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,9,8,5 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 439859-71:
(8*4)+(7*3)+(6*9)+(5*8)+(4*5)+(3*9)+(2*7)+(1*1)=209
209 % 10 = 9
So 439859-71-9 is a valid CAS Registry Number.