57456-42-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57456-42-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,4,5 and 6 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 57456-42:
(7*5)+(6*7)+(5*4)+(4*5)+(3*6)+(2*4)+(1*2)=145
145 % 10 = 5
So 57456-42-5 is a valid CAS Registry Number.