20973-73-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20973-73-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,9,7 and 3 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 20973-73:
(7*2)+(6*0)+(5*9)+(4*7)+(3*3)+(2*7)+(1*3)=113
113 % 10 = 3
So 20973-73-3 is a valid CAS Registry Number.