509101-25-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 509101-25-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,9,1,0 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 509101-25:
(8*5)+(7*0)+(6*9)+(5*1)+(4*0)+(3*1)+(2*2)+(1*5)=111
111 % 10 = 1
So 509101-25-1 is a valid CAS Registry Number.