311349-25-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 311349-25-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,1,1,3,4 and 9 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 311349-25:
(8*3)+(7*1)+(6*1)+(5*3)+(4*4)+(3*9)+(2*2)+(1*5)=104
104 % 10 = 4
So 311349-25-4 is a valid CAS Registry Number.