55039-23-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55039-23-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,0,3 and 9 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 55039-23:
(7*5)+(6*5)+(5*0)+(4*3)+(3*9)+(2*2)+(1*3)=111
111 % 10 = 1
So 55039-23-1 is a valid CAS Registry Number.