73409-59-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73409-59-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,4,0 and 9 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 73409-59:
(7*7)+(6*3)+(5*4)+(4*0)+(3*9)+(2*5)+(1*9)=133
133 % 10 = 3
So 73409-59-3 is a valid CAS Registry Number.