54191-58-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54191-58-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,1,9 and 1 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 54191-58:
(7*5)+(6*4)+(5*1)+(4*9)+(3*1)+(2*5)+(1*8)=121
121 % 10 = 1
So 54191-58-1 is a valid CAS Registry Number.