417725-84-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 417725-84-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,1,7,7,2 and 5 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 417725-84:
(8*4)+(7*1)+(6*7)+(5*7)+(4*2)+(3*5)+(2*8)+(1*4)=159
159 % 10 = 9
So 417725-84-9 is a valid CAS Registry Number.