20300-61-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20300-61-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,3,0 and 0 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 20300-61:
(7*2)+(6*0)+(5*3)+(4*0)+(3*0)+(2*6)+(1*1)=42
42 % 10 = 2
So 20300-61-2 is a valid CAS Registry Number.