20300-64-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20300-64-5 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 4 respectively.
Calculate Digit Verification of CAS Registry Number 20300-64:
(7*2)+(6*0)+(5*3)+(4*0)+(3*0)+(2*6)+(1*4)=45
45 % 10 = 5
So 20300-64-5 is a valid CAS Registry Number.