25405-84-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 25405-84-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,4,0 and 5 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 25405-84:
(7*2)+(6*5)+(5*4)+(4*0)+(3*5)+(2*8)+(1*4)=99
99 % 10 = 9
So 25405-84-9 is a valid CAS Registry Number.