17189-78-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17189-78-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,1,8 and 9 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 17189-78:
(7*1)+(6*7)+(5*1)+(4*8)+(3*9)+(2*7)+(1*8)=135
135 % 10 = 5
So 17189-78-5 is a valid CAS Registry Number.