20033-21-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20033-21-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,0,3 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 20033-21:
(7*2)+(6*0)+(5*0)+(4*3)+(3*3)+(2*2)+(1*1)=40
40 % 10 = 0
So 20033-21-0 is a valid CAS Registry Number.