198905-17-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 198905-17-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,8,9,0 and 5 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 198905-17:
(8*1)+(7*9)+(6*8)+(5*9)+(4*0)+(3*5)+(2*1)+(1*7)=188
188 % 10 = 8
So 198905-17-8 is a valid CAS Registry Number.