258502-54-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 258502-54-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,8,5,0 and 2 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 258502-54:
(8*2)+(7*5)+(6*8)+(5*5)+(4*0)+(3*2)+(2*5)+(1*4)=144
144 % 10 = 4
So 258502-54-4 is a valid CAS Registry Number.