55158-73-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55158-73-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,1,5 and 8 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 55158-73:
(7*5)+(6*5)+(5*1)+(4*5)+(3*8)+(2*7)+(1*3)=131
131 % 10 = 1
So 55158-73-1 is a valid CAS Registry Number.