311794-71-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 311794-71-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,1,1,7,9 and 4 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 311794-71:
(8*3)+(7*1)+(6*1)+(5*7)+(4*9)+(3*4)+(2*7)+(1*1)=135
135 % 10 = 5
So 311794-71-5 is a valid CAS Registry Number.