73421-29-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73421-29-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,4,2 and 1 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 73421-29:
(7*7)+(6*3)+(5*4)+(4*2)+(3*1)+(2*2)+(1*9)=111
111 % 10 = 1
So 73421-29-1 is a valid CAS Registry Number.