439803-59-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 439803-59-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,9,8,0 and 3 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 439803-59:
(8*4)+(7*3)+(6*9)+(5*8)+(4*0)+(3*3)+(2*5)+(1*9)=175
175 % 10 = 5
So 439803-59-5 is a valid CAS Registry Number.