54857-17-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54857-17-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,8,5 and 7 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 54857-17:
(7*5)+(6*4)+(5*8)+(4*5)+(3*7)+(2*1)+(1*7)=149
149 % 10 = 9
So 54857-17-9 is a valid CAS Registry Number.