55431-73-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55431-73-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,4,3 and 1 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 55431-73:
(7*5)+(6*5)+(5*4)+(4*3)+(3*1)+(2*7)+(1*3)=117
117 % 10 = 7
So 55431-73-7 is a valid CAS Registry Number.