439211-80-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 439211-80-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,9,2,1 and 1 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 439211-80:
(8*4)+(7*3)+(6*9)+(5*2)+(4*1)+(3*1)+(2*8)+(1*0)=140
140 % 10 = 0
So 439211-80-0 is a valid CAS Registry Number.