540521-25-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 540521-25-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,4,0,5,2 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 540521-25:
(8*5)+(7*4)+(6*0)+(5*5)+(4*2)+(3*1)+(2*2)+(1*5)=113
113 % 10 = 3
So 540521-25-3 is a valid CAS Registry Number.