439685-73-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 439685-73-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,9,6,8 and 5 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 439685-73:
(8*4)+(7*3)+(6*9)+(5*6)+(4*8)+(3*5)+(2*7)+(1*3)=201
201 % 10 = 1
So 439685-73-1 is a valid CAS Registry Number.