5539-68-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5539-68-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,5,3 and 9 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 5539-68:
(6*5)+(5*5)+(4*3)+(3*9)+(2*6)+(1*8)=114
114 % 10 = 4
So 5539-68-4 is a valid CAS Registry Number.