54121-40-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54121-40-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,1,2 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 54121-40:
(7*5)+(6*4)+(5*1)+(4*2)+(3*1)+(2*4)+(1*0)=83
83 % 10 = 3
So 54121-40-3 is a valid CAS Registry Number.