1439-12-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1439-12-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,4,3 and 9 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1439-12:
(6*1)+(5*4)+(4*3)+(3*9)+(2*1)+(1*2)=69
69 % 10 = 9
So 1439-12-9 is a valid CAS Registry Number.