75403-53-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 75403-53-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,4,0 and 3 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 75403-53:
(7*7)+(6*5)+(5*4)+(4*0)+(3*3)+(2*5)+(1*3)=121
121 % 10 = 1
So 75403-53-1 is a valid CAS Registry Number.