517893-71-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 517893-71-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,1,7,8,9 and 3 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 517893-71:
(8*5)+(7*1)+(6*7)+(5*8)+(4*9)+(3*3)+(2*7)+(1*1)=189
189 % 10 = 9
So 517893-71-9 is a valid CAS Registry Number.