311801-17-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 311801-17-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,1,1,8,0 and 1 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 311801-17:
(8*3)+(7*1)+(6*1)+(5*8)+(4*0)+(3*1)+(2*1)+(1*7)=89
89 % 10 = 9
So 311801-17-9 is a valid CAS Registry Number.