254907-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 254907-20-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,4,9,0 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 254907-20:
(8*2)+(7*5)+(6*4)+(5*9)+(4*0)+(3*7)+(2*2)+(1*0)=145
145 % 10 = 5
So 254907-20-5 is a valid CAS Registry Number.