20502-48-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20502-48-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,5,0 and 2 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 20502-48:
(7*2)+(6*0)+(5*5)+(4*0)+(3*2)+(2*4)+(1*8)=61
61 % 10 = 1
So 20502-48-1 is a valid CAS Registry Number.