54172-25-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54172-25-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,1,7 and 2 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 54172-25:
(7*5)+(6*4)+(5*1)+(4*7)+(3*2)+(2*2)+(1*5)=107
107 % 10 = 7
So 54172-25-7 is a valid CAS Registry Number.