199117-88-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 199117-88-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,1,1 and 7 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 199117-88:
(8*1)+(7*9)+(6*9)+(5*1)+(4*1)+(3*7)+(2*8)+(1*8)=179
179 % 10 = 9
So 199117-88-9 is a valid CAS Registry Number.