1444-71-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1444-71-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,4,4 and 4 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1444-71:
(6*1)+(5*4)+(4*4)+(3*4)+(2*7)+(1*1)=69
69 % 10 = 9
So 1444-71-9 is a valid CAS Registry Number.