57240-40-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57240-40-1 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 0 respectively.
Calculate Digit Verification of CAS Registry Number 57240-40:
(7*5)+(6*7)+(5*2)+(4*4)+(3*0)+(2*4)+(1*0)=111
111 % 10 = 1
So 57240-40-1 is a valid CAS Registry Number.