20501-84-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20501-84-2 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 1 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 20501-84:
(7*2)+(6*0)+(5*5)+(4*0)+(3*1)+(2*8)+(1*4)=62
62 % 10 = 2
So 20501-84-2 is a valid CAS Registry Number.