199801-85-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 199801-85-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,8,0 and 1 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 199801-85:
(8*1)+(7*9)+(6*9)+(5*8)+(4*0)+(3*1)+(2*8)+(1*5)=189
189 % 10 = 9
So 199801-85-9 is a valid CAS Registry Number.