54389-71-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54389-71-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,3,8 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 54389-71:
(7*5)+(6*4)+(5*3)+(4*8)+(3*9)+(2*7)+(1*1)=148
148 % 10 = 8
So 54389-71-8 is a valid CAS Registry Number.