73431-20-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73431-20-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,4,3 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 73431-20:
(7*7)+(6*3)+(5*4)+(4*3)+(3*1)+(2*2)+(1*0)=106
106 % 10 = 6
So 73431-20-6 is a valid CAS Registry Number.