31097-73-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31097-73-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,0,9 and 7 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 31097-73:
(7*3)+(6*1)+(5*0)+(4*9)+(3*7)+(2*7)+(1*3)=101
101 % 10 = 1
So 31097-73-1 is a valid CAS Registry Number.