439385-13-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 439385-13-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,9,3,8 and 5 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 439385-13:
(8*4)+(7*3)+(6*9)+(5*3)+(4*8)+(3*5)+(2*1)+(1*3)=174
174 % 10 = 4
So 439385-13-4 is a valid CAS Registry Number.