75420-54-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 75420-54-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,4,2 and 0 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 75420-54:
(7*7)+(6*5)+(5*4)+(4*2)+(3*0)+(2*5)+(1*4)=121
121 % 10 = 1
So 75420-54-1 is a valid CAS Registry Number.