57240-42-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57240-42-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,2,4 and 0 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 57240-42:
(7*5)+(6*7)+(5*2)+(4*4)+(3*0)+(2*4)+(1*2)=113
113 % 10 = 3
So 57240-42-3 is a valid CAS Registry Number.