439111-71-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 439111-71-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,9,1,1 and 1 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 439111-71:
(8*4)+(7*3)+(6*9)+(5*1)+(4*1)+(3*1)+(2*7)+(1*1)=134
134 % 10 = 4
So 439111-71-4 is a valid CAS Registry Number.