439-02-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 439-02-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,3 and 9 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 439-02:
(5*4)+(4*3)+(3*9)+(2*0)+(1*2)=61
61 % 10 = 1
So 439-02-1 is a valid CAS Registry Number.