1724-16-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1724-16-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,7,2 and 4 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1724-16:
(6*1)+(5*7)+(4*2)+(3*4)+(2*1)+(1*6)=69
69 % 10 = 9
So 1724-16-9 is a valid CAS Registry Number.