311804-00-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 311804-00-9 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 4 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 311804-00:
(8*3)+(7*1)+(6*1)+(5*8)+(4*0)+(3*4)+(2*0)+(1*0)=89
89 % 10 = 9
So 311804-00-9 is a valid CAS Registry Number.