73945-80-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73945-80-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,9,4 and 5 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 73945-80:
(7*7)+(6*3)+(5*9)+(4*4)+(3*5)+(2*8)+(1*0)=159
159 % 10 = 9
So 73945-80-9 is a valid CAS Registry Number.