55161-31-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55161-31-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,1,6 and 1 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 55161-31:
(7*5)+(6*5)+(5*1)+(4*6)+(3*1)+(2*3)+(1*1)=104
104 % 10 = 4
So 55161-31-4 is a valid CAS Registry Number.