17789-28-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17789-28-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,7,8 and 9 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 17789-28:
(7*1)+(6*7)+(5*7)+(4*8)+(3*9)+(2*2)+(1*8)=155
155 % 10 = 5
So 17789-28-5 is a valid CAS Registry Number.