75543-28-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 75543-28-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,5,4 and 3 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 75543-28:
(7*7)+(6*5)+(5*5)+(4*4)+(3*3)+(2*2)+(1*8)=141
141 % 10 = 1
So 75543-28-1 is a valid CAS Registry Number.