539813-21-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 539813-21-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,3,9,8,1 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 539813-21:
(8*5)+(7*3)+(6*9)+(5*8)+(4*1)+(3*3)+(2*2)+(1*1)=173
173 % 10 = 3
So 539813-21-3 is a valid CAS Registry Number.