54542-97-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54542-97-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,5,4 and 2 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 54542-97:
(7*5)+(6*4)+(5*5)+(4*4)+(3*2)+(2*9)+(1*7)=131
131 % 10 = 1
So 54542-97-1 is a valid CAS Registry Number.