39540-57-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 39540-57-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,5,4 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 39540-57:
(7*3)+(6*9)+(5*5)+(4*4)+(3*0)+(2*5)+(1*7)=133
133 % 10 = 3
So 39540-57-3 is a valid CAS Registry Number.