5517-78-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5517-78-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,5,1 and 7 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 5517-78:
(6*5)+(5*5)+(4*1)+(3*7)+(2*7)+(1*8)=102
102 % 10 = 2
So 5517-78-2 is a valid CAS Registry Number.