31191-54-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31191-54-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,1,9 and 1 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 31191-54:
(7*3)+(6*1)+(5*1)+(4*9)+(3*1)+(2*5)+(1*4)=85
85 % 10 = 5
So 31191-54-5 is a valid CAS Registry Number.