1547-71-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1547-71-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,5,4 and 7 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1547-71:
(6*1)+(5*5)+(4*4)+(3*7)+(2*7)+(1*1)=83
83 % 10 = 3
So 1547-71-3 is a valid CAS Registry Number.