20502-39-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20502-39-0 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, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 20502-39:
(7*2)+(6*0)+(5*5)+(4*0)+(3*2)+(2*3)+(1*9)=60
60 % 10 = 0
So 20502-39-0 is a valid CAS Registry Number.